NewGauge: Fixes issue with too eager migration (#113200)

public/app/plugins/panel/radialbar/GaugeMigrations.test.ts

@@ -60,6 +60,35 @@ describe('Gauge Panel Migrations', () => {
     expect(result.sparkline).toBe(true);
   });
 
+  it('does not overwrite new gauge for current version', () => {
+    const panel = {
+      id: 2,
+      options: {
+        reduceOptions: {
+          calcs: ['lastNotNull'],
+        },
+        shape: 'circle',
+        gradient: 'auto',
+        sparkline: true,
+      },
+      fieldConfig: {
+        defaults: {
+          color: {
+            mode: FieldColorModeId.Fixed,
+            fixedColor: 'blue',
+          },
+        },
+        overrides: [],
+      },
+      pluginVersion: '12.4.0',
+      type: 'gauge',
+    } as Omit<PanelModel, 'fieldConfig'>;
+
+    const result = gaugePanelMigrationHandler(panel as PanelModel);
+    expect(result.sparkline).toBe(true);
+    expect(result.gradient).toBe('auto');
+  });
+
   it('from 6.1.1', () => {
     const panel = {
       datasource: '-- Grafana --',

public/app/plugins/panel/radialbar/GaugeMigrations.ts

@@ -39,6 +39,11 @@ export function gaugePanelMigrationHandler(panel: PanelModel<Options>): Partial<
 }
 
 export function shouldMigrateGauge(panel: PanelModel): boolean {
+  // Test for new gauge option
+  if (panel.options?.shape) {
+    return false;
+  }
+
   const previousVersion = parseFloat(panel.pluginVersion ?? '8');
   return previousVersion < 13;
 }