Dashboard Migrations: V2 - legacy services.filter and graphite panel type (#112282)

* migrate to v2

* Fix tests

* graphite panels should be auto-migrated

* lint

* Provisioning: Fix dashboard export to preserve original API version

* Add error handling for the edge case where conversion fails but no
storedVersion is available.

pkg/registry/apis/provisioning/jobs/export/resources.go

@@ -41,9 +41,11 @@ func ExportResources(ctx context.Context, options provisioning.ExportJobOptions,
 		if kind.GroupResource() == resources.DashboardResource.GroupResource() {
 			var v2clientAlphaV1, v2clientAlphaV2 dynamic.ResourceInterface
 			shim = func(ctx context.Context, item *unstructured.Unstructured) (*unstructured.Unstructured, error) {
-				failed, _, _ := unstructured.NestedBool(item.Object, "status", "conversion", "failed")
-				if failed {
-					storedVersion, _, _ := unstructured.NestedString(item.Object, "status", "conversion", "storedVersion")
+				// Check if there's a stored version in the conversion status.
+				// This indicates the original API version the dashboard was created with,
+				// which should be preserved during export regardless of whether conversion succeeded or failed.
+				storedVersion, _, _ := unstructured.NestedString(item.Object, "status", "conversion", "storedVersion")
+				if storedVersion != "" {
 					// For v2 we need to request the original version
 					if strings.HasPrefix(storedVersion, "v2alpha1") {
 						if v2clientAlphaV1 == nil {
@@ -73,6 +75,13 @@ func ExportResources(ctx context.Context, options provisioning.ExportJobOptions,
 
 					return nil, fmt.Errorf("unsupported dashboard version: %s", storedVersion)
 				}
+
+				// If conversion failed but there's no storedVersion, this is an error condition
+				failed, _, _ := unstructured.NestedBool(item.Object, "status", "conversion", "failed")
+				if failed {
+					return nil, fmt.Errorf("conversion failed but no storedVersion available")
+				}
+
 				return item, nil
 			}
 		}