LabKey · labkey-susanh · Apr 7, 2026 · Apr 6, 2026 · Apr 6, 2026 · Apr 7, 2026
diff --git a/packages/components/package-lock.json b/packages/components/package-lock.json
diff --git a/packages/components/package.json b/packages/components/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@labkey/components",
-  "version": "7.28.1",
+  "version": "7.28.2",
   "description": "Components, models, actions, and utility functions for LabKey applications and pages",
   "sideEffects": false,
   "files": [

diff --git a/packages/components/releaseNotes/components.md b/packages/components/releaseNotes/components.md
@@ -1,6 +1,10 @@
 # @labkey/components
 Components, models, actions, and utility functions for LabKey applications and pages
 
+### version 7.28.2
+*Released*: 7 April 2026
+- Update `FEEZER_ITEM_SAMPLE_MAPPER` to return undefined if not matched, for consistency with other mappers
+
 ### version 7.28.1
 *Released*: 3 April 2026
 - GitHub Issue 613: Use "Status" instead of "SampleState" in error messaging.

diff --git a/packages/components/src/internal/url/URLResolver.ts b/packages/components/src/internal/url/URLResolver.ts
@@ -479,7 +479,7 @@ export const FREEZER_ITEM_SAMPLE_MAPPER = new ActionMapper('query', 'executeQuer
             }
         }
     }
-    return false;
+    return undefined;
 });
 
 // This mapper overrides the URL provided for the core.ProjectManagement query.
-Original file line number
+Diff line change
@@ Expand Up @@
                 }
             }
         }
-        return false;
+        return undefined;
     });
     // This mapper overrides the URL provided for the core.ProjectManagement query.
@@ Expand Down @@