DashboardMigration: V16 was removing panels when repeatInteration is null (#110151)

apps/dashboard/pkg/migration/schemaversion/v16.go

@@ -66,7 +66,7 @@ func upgradeToGridLayout(dashboard map[string]interface{}) {
 		}
 
 		// Skip repeated rows (line 1031-1033 in TS)
-		if _, hasRepeatIteration := row["repeatIteration"]; hasRepeatIteration {
+		if repeatIteration, hasRepeatIteration := row["repeatIteration"]; hasRepeatIteration && repeatIteration != nil {
 			continue
 		}
 
@@ -283,7 +283,11 @@ func getMaxPanelID(rows []interface{}) int {
 func shouldShowRows(rows []interface{}) bool {
 	for _, rowInterface := range rows {
 		if row, ok := rowInterface.(map[string]interface{}); ok {
-			if GetBoolValue(row, "collapse") || GetBoolValue(row, "showTitle") || GetStringValue(row, "repeat") != "" {
+			collapse := GetBoolValue(row, "collapse")
+			showTitle := GetBoolValue(row, "showTitle")
+			repeat := GetStringValue(row, "repeat")
+
+			if collapse || showTitle || repeat != "" {
 				return true
 			}
 		}

apps/dashboard/pkg/migration/schemaversion/v16_test.go

@@ -8,6 +8,63 @@ import (
 
 func TestV16(t *testing.T) {
 	tests := []migrationTestCase{
+		{
+			name: "should handle repeatIteration null",
+			input: map[string]interface{}{
+				"schemaVersion": 15,
+				"rows": []interface{}{
+					map[string]interface{}{
+						"collapse":        false,
+						"showTitle":       true,
+						"title":           "Overview",
+						"type":            "row",
+						"repeat":          nil,
+						"repeatIteration": nil,
+						"repeatRowId":     nil,
+						"panels": []interface{}{
+							map[string]interface{}{
+								"id":    2,
+								"type":  "stat",
+								"span":  12,
+								"title": "Customer Stats",
+							},
+						},
+					},
+				},
+			},
+			expected: map[string]interface{}{
+				"schemaVersion": 16,
+				"panels": []interface{}{
+					// The stat panel should be processed and added
+					map[string]interface{}{
+						"id":    2,
+						"type":  "stat",
+						"title": "Customer Stats",
+						"gridPos": map[string]interface{}{
+							"x": 0,
+							"y": 1,
+							"w": 24,
+							"h": 7, // default height
+						},
+					},
+					// The row panel should be created because showTitle is true
+					map[string]interface{}{
+						"id":        3, // Next ID after max panel ID (2)
+						"type":      "row",
+						"title":     "Overview",
+						"collapsed": false,
+						"repeat":    "",
+						"panels":    []interface{}{},
+						"gridPos": map[string]interface{}{
+							"x": 0,
+							"y": 0,
+							"w": 24,
+							"h": 7, // default height
+						},
+					},
+				},
+			},
+		},
 		{
 			name: "should create proper grid",
 			input: map[string]interface{}{