diff --git a/.last-branch b/.last-branch
index 882b180..9671641 100644
--- a/.last-branch
+++ b/.last-branch
@@ -1 +1 @@
-v20260120-07-autotask-psa-resolution-handling
+v20260120-08-runchecks-link-existing-autotask-ticket
diff --git a/containers/backupchecks/src/backend/app/integrations/autotask/client.py b/containers/backupchecks/src/backend/app/integrations/autotask/client.py
index bc8b963..e190716 100644
--- a/containers/backupchecks/src/backend/app/integrations/autotask/client.py
+++ b/containers/backupchecks/src/backend/app/integrations/autotask/client.py
@@ -601,3 +601,59 @@ class AutotaskClient:
 
         data = self._request("POST", "Tickets/query", json_body={"filter": flt})
         return self._as_items_list(data)
+
+    def query_tickets_for_company(
+        self,
+        company_id: int,
+        *,
+        search: str = "",
+        exclude_status_ids: Optional[List[int]] = None,
+        limit: int = 50,
+    ) -> List[Dict[str, Any]]:
+        """Query Tickets for a specific company, optionally searching by ticket number or title.
+
+        Uses POST /Tickets/query.
+
+        Note:
+        - Autotask query operators vary by tenant; we use common operators (eq, contains).
+        - If the query fails due to operator support, callers should fall back to get_ticket(id).
+        """
+
+        try:
+            cid = int(company_id)
+        except Exception:
+            cid = 0
+        if cid <= 0:
+            return []
+
+        flt: List[Dict[str, Any]] = [
+            {"op": "eq", "field": "companyID", "value": cid},
+        ]
+
+        ex: List[int] = []
+        for x in exclude_status_ids or []:
+            try:
+                v = int(x)
+            except Exception:
+                continue
+            if v > 0:
+                ex.append(v)
+        if ex:
+            flt.append({"op": "notIn", "field": "status", "value": ex})
+
+        q = (search or "").strip()
+        if q:
+            # Ticket numbers in Autotask are typically like T20260119.0004
+            if q.upper().startswith("T") and any(ch.isdigit() for ch in q):
+                flt.append({"op": "eq", "field": "ticketNumber", "value": q.strip()})
+            else:
+                # Broad search on title
+                flt.append({"op": "contains", "field": "title", "value": q})
+
+        data = self._request("POST", "Tickets/query", json_body={"filter": flt})
+        items = self._as_items_list(data)
+
+        # Respect limit if tenant returns more.
+        if limit and isinstance(limit, int) and limit > 0:
+            return items[: int(limit)]
+        return items
diff --git a/containers/backupchecks/src/backend/app/main/routes_run_checks.py b/containers/backupchecks/src/backend/app/main/routes_run_checks.py
index 3fd2370..1c4334e 100644
--- a/containers/backupchecks/src/backend/app/main/routes_run_checks.py
+++ b/containers/backupchecks/src/backend/app/main/routes_run_checks.py
@@ -427,8 +427,8 @@ def _poll_autotask_ticket_states_for_runs(*, run_ids: list[int]) -> None:
             else:
                 resolved_at_raw = None
             if resolved_at_raw:
-                s = str(resolved_at_raw).replace("Z", "+00:00")
-                resolved_at = datetime.fromisoformat(s)
+                s_dt = str(resolved_at_raw).replace("Z", "+00:00")
+                resolved_at = datetime.fromisoformat(s_dt)
                 if resolved_at.tzinfo is not None:
                     resolved_at = resolved_at.astimezone(timezone.utc).replace(tzinfo=None)
         except Exception:
@@ -446,7 +446,7 @@ def _poll_autotask_ticket_states_for_runs(*, run_ids: list[int]) -> None:
                 job=job,
                 run_ids=[int(x.id) for x in runs_for_ticket if getattr(x, "id", None)],
                 now=resolved_at or now,
-                origin="Resolved by PSA",
+                origin="psa",
             )
 
     try:
@@ -1567,6 +1567,244 @@ def api_run_checks_create_autotask_ticket():
     )
 
 
+
+
+@main_bp.get("/api/run-checks/autotask-existing-tickets")
+@login_required
+@roles_required("admin", "operator")
+def api_run_checks_autotask_existing_tickets():
+    """List open (non-terminal) Autotask tickets for the selected run's customer.
+
+    Phase 2.2: used by the Run Checks modal to link an existing PSA ticket.
+    """
+
+    try:
+        run_id = int(request.args.get("run_id") or 0)
+    except Exception:
+        run_id = 0
+
+    q = (request.args.get("q") or "").strip()
+
+    if run_id <= 0:
+        return jsonify({"status": "error", "message": "Invalid parameters."}), 400
+
+    run = JobRun.query.get(run_id)
+    if not run:
+        return jsonify({"status": "error", "message": "Run not found."}), 404
+
+    job = Job.query.get(run.job_id)
+    if not job:
+        return jsonify({"status": "error", "message": "Job not found."}), 404
+
+    customer = Customer.query.get(job.customer_id) if getattr(job, "customer_id", None) else None
+    if not customer:
+        return jsonify({"status": "error", "message": "Customer not found."}), 404
+
+    if not getattr(customer, "autotask_company_id", None):
+        return jsonify({"status": "error", "message": "Customer has no Autotask company mapping."}), 400
+
+    if (getattr(customer, "autotask_mapping_status", None) or "").strip().lower() not in ("ok", "renamed"):
+        return jsonify({"status": "error", "message": "Autotask company mapping is not valid."}), 400
+
+    settings = _get_or_create_settings()
+
+    # Map status ID -> label from cached settings (kept in sync by Settings page).
+    status_map = {}
+    try:
+        import json as _json
+
+        raw = getattr(settings, "autotask_cached_ticket_statuses_json", None)
+        if raw:
+            for x in (_json.loads(raw) or []):
+                if isinstance(x, dict) and "value" in x:
+                    status_map[str(x.get("value"))] = str(x.get("label") or "")
+    except Exception:
+        status_map = {}
+
+    try:
+        client = _build_autotask_client_from_settings()
+
+        # Ensure we have a status map; if empty, fetch and cache once.
+        if not status_map:
+            try:
+                import json as _json
+
+                statuses = client.get_ticket_statuses()
+                settings.autotask_cached_ticket_statuses_json = _json.dumps(statuses)
+                settings.autotask_reference_last_sync_at = datetime.utcnow()
+                db.session.commit()
+                for x in (statuses or []):
+                    if isinstance(x, dict) and "value" in x:
+                        status_map[str(x.get("value"))] = str(x.get("label") or "")
+            except Exception:
+                # Best-effort; list will still work without labels.
+                pass
+
+        tickets = client.query_tickets_for_company(
+            int(customer.autotask_company_id),
+            search=q,
+            exclude_status_ids=sorted(AUTOTASK_TERMINAL_STATUS_IDS),
+            limit=75,
+        )
+    except Exception as exc:
+        return jsonify({"status": "error", "message": f"Autotask ticket lookup failed: {exc}"}), 400
+
+    items = []
+    for t in tickets or []:
+        if not isinstance(t, dict):
+            continue
+        tid = t.get("id")
+        tnum = (t.get("ticketNumber") or t.get("number") or "")
+        title = (t.get("title") or "")
+        st = t.get("status")
+        try:
+            st_int = int(st) if st is not None else None
+        except Exception:
+            st_int = None
+        st_label = status_map.get(str(st_int)) if st_int is not None else ""
+        items.append(
+            {
+                "id": tid,
+                "ticketNumber": str(tnum or ""),
+                "title": str(title or ""),
+                "status": st_int,
+                "statusLabel": st_label or "",
+            }
+        )
+
+    # Sort: newest-ish first. Autotask query ordering isn't guaranteed, so we provide a stable sort.
+    items.sort(key=lambda x: (x.get("ticketNumber") or ""), reverse=True)
+
+    return jsonify({"status": "ok", "items": items})
+
+
+@main_bp.post("/api/run-checks/autotask-link-existing-ticket")
+@login_required
+@roles_required("admin", "operator")
+def api_run_checks_autotask_link_existing_ticket():
+    """Link an existing Autotask ticket to the selected run (and propagate to all active runs of the job).
+
+    Phase 2.2: used by the Run Checks modal.
+    """
+
+    data = request.get_json(silent=True) or {}
+
+    try:
+        run_id = int(data.get("run_id") or 0)
+    except Exception:
+        run_id = 0
+
+    try:
+        ticket_id = int(data.get("ticket_id") or 0)
+    except Exception:
+        ticket_id = 0
+
+    if run_id <= 0 or ticket_id <= 0:
+        return jsonify({"status": "error", "message": "Invalid parameters."}), 400
+
+    run = JobRun.query.get(run_id)
+    if not run:
+        return jsonify({"status": "error", "message": "Run not found."}), 404
+
+    # Do not overwrite an existing link unless the current one is resolved/deleted.
+    if getattr(run, "autotask_ticket_id", None):
+        return jsonify({"status": "error", "message": "Run already has an Autotask ticket linked."}), 400
+
+    job = Job.query.get(run.job_id)
+    if not job:
+        return jsonify({"status": "error", "message": "Job not found."}), 404
+
+    customer = Customer.query.get(job.customer_id) if getattr(job, "customer_id", None) else None
+    if not customer:
+        return jsonify({"status": "error", "message": "Customer not found."}), 404
+
+    if not getattr(customer, "autotask_company_id", None):
+        return jsonify({"status": "error", "message": "Customer has no Autotask company mapping."}), 400
+
+    if (getattr(customer, "autotask_mapping_status", None) or "").strip().lower() not in ("ok", "renamed"):
+        return jsonify({"status": "error", "message": "Autotask company mapping is not valid."}), 400
+
+    try:
+        client = _build_autotask_client_from_settings()
+        t = client.get_ticket(ticket_id)
+    except Exception as exc:
+        return jsonify({"status": "error", "message": f"Autotask ticket retrieval failed: {exc}"}), 400
+
+    if not isinstance(t, dict):
+        return jsonify({"status": "error", "message": "Autotask did not return a ticket object."}), 400
+
+    # Enforce company scope.
+    try:
+        t_company = int(t.get("companyID") or 0)
+    except Exception:
+        t_company = 0
+
+    if t_company != int(customer.autotask_company_id):
+        return jsonify({"status": "error", "message": "Selected ticket does not belong to the mapped Autotask company."}), 400
+
+    tnum = (t.get("ticketNumber") or t.get("number") or "")
+    tnum = str(tnum or "").strip()
+    if not tnum:
+        return jsonify({"status": "error", "message": "Autotask ticket does not have a ticket number."}), 400
+
+    # Block terminal tickets from being linked (Phase 2.2 only lists open tickets, but enforce server-side).
+    try:
+        st = int(t.get("status")) if t.get("status") is not None else 0
+    except Exception:
+        st = 0
+    if st in AUTOTASK_TERMINAL_STATUS_IDS:
+        return jsonify({"status": "error", "message": "Cannot link a terminal/completed Autotask ticket."}), 400
+
+    now = datetime.utcnow()
+
+    run.autotask_ticket_id = int(ticket_id)
+    run.autotask_ticket_number = tnum
+    run.autotask_ticket_created_at = now
+    run.autotask_ticket_created_by_user_id = current_user.id
+
+    # Propagate linkage to all active (unreviewed) runs of the same job.
+    active_runs = (
+        JobRun.query.filter(JobRun.job_id == job.id, JobRun.reviewed_at.is_(None)).order_by(JobRun.id.asc()).all()
+    )
+    run_ids = []
+    for rr in active_runs or []:
+        if getattr(rr, "id", None) is None:
+            continue
+        rr.autotask_ticket_id = int(ticket_id)
+        rr.autotask_ticket_number = tnum
+        if getattr(rr, "autotask_ticket_created_at", None) is None:
+            rr.autotask_ticket_created_at = now
+        if getattr(rr, "autotask_ticket_created_by_user_id", None) is None:
+            rr.autotask_ticket_created_by_user_id = current_user.id
+        run_ids.append(int(rr.id))
+
+    # Ensure internal Ticket + TicketJobRun linkage for legacy ticket behavior.
+    internal_ticket = None
+    try:
+        internal_ticket = _ensure_internal_ticket_for_autotask(
+            ticket_number=tnum,
+            job=job,
+            run_ids=run_ids,
+            now=now,
+            active_from_dt=now,
+        )
+    except Exception:
+        internal_ticket = None
+
+    try:
+        db.session.commit()
+    except Exception:
+        db.session.rollback()
+        return jsonify({"status": "error", "message": "Failed to persist Autotask ticket link."}), 500
+
+    return jsonify(
+        {
+            "status": "ok",
+            "ticket_id": int(ticket_id),
+            "ticket_number": tnum,
+            "internal_ticket_id": int(getattr(internal_ticket, "id", 0) or 0) if internal_ticket else 0,
+        }
+    )
 @main_bp.post("/api/run-checks/mark-reviewed")
 @login_required
 @roles_required("admin", "operator")
diff --git a/containers/backupchecks/src/templates/main/run_checks.html b/containers/backupchecks/src/templates/main/run_checks.html
index e05d738..7eada09 100644
--- a/containers/backupchecks/src/templates/main/run_checks.html
+++ b/containers/backupchecks/src/templates/main/run_checks.html
@@ -219,7 +219,10 @@
 	                          {% if autotask_enabled %}
 	                          <div class="d-flex align-items-center justify-content-between">
 	                            <div class="fw-semibold">Autotask ticket</div>
-	                            <button type="button" class="btn btn-sm btn-outline-primary" id="rcm_autotask_create">Create</button>
+	                            <div class="d-flex gap-2">
+								    <button type="button" class="btn btn-sm btn-outline-secondary" id="rcm_autotask_link_existing">Link existing</button>
+								    <button type="button" class="btn btn-sm btn-outline-primary" id="rcm_autotask_create">Create</button>
+								  </div>
 	                          </div>
 	                          <div class="mt-2 small" id="rcm_autotask_info"></div>
 	                          <div class="mt-2 small text-muted" id="rcm_autotask_status"></div>
@@ -292,6 +295,43 @@
   </div>
 </div>
 
+
+
+<div class="modal fade" id="autotaskLinkModal" tabindex="-1" aria-labelledby="autotaskLinkModalLabel" aria-hidden="true">
+  <div class="modal-dialog modal-lg modal-dialog-scrollable">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="autotaskLinkModalLabel">Link existing Autotask ticket</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <div class="modal-body">
+        <div class="d-flex gap-2 mb-2">
+          <input type="text" class="form-control" id="atl_search" placeholder="Search by ticket number or title" />
+          <button type="button" class="btn btn-outline-secondary" id="atl_refresh">Refresh</button>
+        </div>
+        <div class="small text-muted mb-2" id="atl_status"></div>
+        <div class="table-responsive">
+          <table class="table table-sm table-hover align-middle">
+            <thead class="table-light">
+              <tr>
+                <th style="width: 1%;"></th>
+                <th>Ticket</th>
+                <th>Title</th>
+                <th>Status</th>
+              </tr>
+            </thead>
+            <tbody id="atl_tbody"></tbody>
+          </table>
+        </div>
+        <div class="text-muted" id="atl_empty" style="display:none;">No tickets found.</div>
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+      </div>
+    </div>
+  </div>
+</div>
+
 <script>
   (function () {
     var table = document.getElementById('runChecksTable');
@@ -851,6 +891,7 @@ table.addEventListener('change', function (e) {
 
     function bindInlineCreateForms() {
       var btnAutotask = document.getElementById('rcm_autotask_create');
+      var btnAutotaskLink = document.getElementById('rcm_autotask_link_existing');
       var atInfo = document.getElementById('rcm_autotask_info');
       var atStatus = document.getElementById('rcm_autotask_status');
 
@@ -870,6 +911,7 @@ table.addEventListener('change', function (e) {
 
       function setDisabled(disabled) {
         if (btnAutotask) btnAutotask.disabled = disabled;
+        if (btnAutotaskLink) btnAutotaskLink.disabled = disabled;
         if (btnTicket) btnTicket.disabled = disabled;
         if (tCode) tCode.disabled = disabled;
         if (btnRemark) btnRemark.disabled = disabled;
@@ -915,6 +957,12 @@ table.addEventListener('change', function (e) {
           if (run && run.autotask_ticket_id && (isResolved || isDeleted)) btnAutotask.textContent = 'Create new';
           else btnAutotask.textContent = 'Create';
         }
+
+        if (btnAutotaskLink) {
+          var hasAtTicket = !!(run && run.autotask_ticket_id);
+          // Link existing is only meaningful when there is no PSA ticket linked to this run.
+          btnAutotaskLink.style.display = hasAtTicket ? 'none' : '';
+        }
       }
       window.__rcmRenderAutotaskInfo = renderAutotaskInfo;
 
@@ -963,6 +1011,114 @@ table.addEventListener('change', function (e) {
         });
       }
 
+      if (btnAutotaskLink) {
+        var linkModalEl = document.getElementById('autotaskLinkModal');
+        var linkModal = linkModalEl ? bootstrap.Modal.getOrCreateInstance(linkModalEl) : null;
+        var atlSearch = document.getElementById('atl_search');
+        var atlRefresh = document.getElementById('atl_refresh');
+        var atlStatus = document.getElementById('atl_status');
+        var atlTbody = document.getElementById('atl_tbody');
+        var atlEmpty = document.getElementById('atl_empty');
+
+        function renderAtlRows(items) {
+          if (!atlTbody) return;
+          atlTbody.innerHTML = '';
+          if (atlEmpty) atlEmpty.style.display = (items && items.length) ? 'none' : '';
+          (items || []).forEach(function (t) {
+            var tr = document.createElement('tr');
+            var tdBtn = document.createElement('td');
+            var btn = document.createElement('button');
+            btn.type = 'button';
+            btn.className = 'btn btn-sm btn-outline-primary';
+            btn.textContent = 'Link';
+            btn.addEventListener('click', function () {
+              if (!currentRunId) { alert('Select a run first.'); return; }
+              if (!confirm('Link ticket ' + (t.ticketNumber || '') + ' to this run?')) return;
+              if (atlStatus) atlStatus.textContent = 'Linking...';
+              apiJson('/api/run-checks/autotask-link-existing-ticket', {
+                method: 'POST',
+                body: JSON.stringify({run_id: currentRunId, ticket_id: t.id})
+              })
+              .then(function (j) {
+                if (!j || j.status !== 'ok') throw new Error((j && j.message) || 'Failed.');
+                if (atlStatus) atlStatus.textContent = '';
+                if (linkModal) linkModal.hide();
+
+                // Refresh modal data so UI reflects stored ticket linkage.
+                var keepRunId = currentRunId;
+                if (currentJobId) {
+                  return fetch('/api/run-checks/details?job_id=' + encodeURIComponent(currentJobId))
+                    .then(function (r) { return r.json(); })
+                    .then(function (payload) {
+                      currentPayload = payload;
+                      var idx = 0;
+                      var runs = (payload && payload.runs) || [];
+                      for (var i = 0; i < runs.length; i++) {
+                        if (String(runs[i].id) === String(keepRunId)) { idx = i; break; }
+                      }
+                      renderRun(payload, idx);
+                    });
+                }
+              })
+              .catch(function (e) {
+                if (atlStatus) atlStatus.textContent = e.message || 'Failed.';
+                else alert(e.message || 'Failed.');
+              });
+            });
+            tdBtn.appendChild(btn);
+
+            var tdNum = document.createElement('td');
+            tdNum.textContent = (t.ticketNumber || '');
+
+            var tdTitle = document.createElement('td');
+            tdTitle.textContent = (t.title || '');
+
+            var tdStatus = document.createElement('td');
+            tdStatus.textContent = (t.status_label || String(t.status || ''));
+
+            tr.appendChild(tdBtn);
+            tr.appendChild(tdNum);
+            tr.appendChild(tdTitle);
+            tr.appendChild(tdStatus);
+            atlTbody.appendChild(tr);
+          });
+        }
+
+        function loadExistingTickets() {
+          if (!currentRunId) { alert('Select a run first.'); return; }
+          var q = atlSearch ? (atlSearch.value || '').trim() : '';
+          if (atlStatus) atlStatus.textContent = 'Loading...';
+          fetch('/api/run-checks/autotask-existing-tickets?run_id=' + encodeURIComponent(currentRunId) + '&q=' + encodeURIComponent(q))
+            .then(function (r) { return r.json(); })
+            .then(function (j) {
+              if (!j || j.status !== 'ok') throw new Error((j && j.message) || 'Failed.');
+              if (atlStatus) atlStatus.textContent = '';
+              renderAtlRows(j.items || []);
+            })
+            .catch(function (e) {
+              if (atlStatus) atlStatus.textContent = e.message || 'Failed.';
+              renderAtlRows([]);
+            });
+        }
+
+        if (atlRefresh) {
+          atlRefresh.addEventListener('click', function () { loadExistingTickets(); });
+        }
+        if (atlSearch) {
+          atlSearch.addEventListener('keydown', function (ev) {
+            if (ev.key === 'Enter') { ev.preventDefault(); loadExistingTickets(); }
+          });
+        }
+
+        btnAutotaskLink.addEventListener('click', function () {
+          if (!currentRunId) { alert('Select a run first.'); return; }
+          if (atlStatus) atlStatus.textContent = '';
+          renderAtlRows([]);
+          if (linkModal) linkModal.show();
+          loadExistingTickets();
+        });
+      }
+
       if (btnAutotask) {
         btnAutotask.addEventListener('click', function () {
           if (!currentRunId) { alert('Select a run first.'); return; }
diff --git a/docs/changelog.md b/docs/changelog.md
index fe83e04..a075402 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -422,6 +422,18 @@ Changes:
 - Preserved legacy internal Ticket and TicketJobRun creation/linking so Tickets overview, Tickets/Remarks, and Job Details continue to function identically to manually linked tickets.
 - Ensured resolution timestamps are derived from Autotask (resolvedDateTime / completedDate) instead of using current time.
 
+## v20260120-08-runchecks-link-existing-autotask-ticket
+
+- Added Phase 2.2 “Link existing Autotask ticket” flow in Run Checks:
+  - New UI button “Link existing” next to “Create” in the Run Checks modal.
+  - Added modal popup with search + refresh and a selectable list of non-terminal tickets.
+- Added backend API endpoints:
+  - GET /api/run-checks/autotask-existing-tickets (list/search tickets for mapped company, excluding terminal statuses)
+  - POST /api/run-checks/autotask-link-existing-ticket (link selected ticket to run and create/update internal Ticket + TicketJobRun links)
+- Extended Autotask client with a ticket query helper to support listing/searching tickets for a company.
+- Improved internal ticket resolve handling:
+  - Do not overwrite resolved_origin when already set; keep “psa” origin when resolved by PSA.
+  
 ***
 
 ## v0.1.21