Simplify export by allowing only one resource export based on dashboard schema version

public/app/features/dashboard-scene/sharing/ExportButton/ResourceExport.tsx

@@ -40,7 +40,6 @@ export function ResourceExport({
   onViewYAML,
 }: Props) {
   const hasLibraryPanels = dashboardJson.value?.hasLibraryPanels;
-  const initialSaveModelVersion = dashboardJson.value?.initialSaveModelVersion;
   const isV2Dashboard =
     dashboardJson.value?.json && 'spec' in dashboardJson.value.json && 'elements' in dashboardJson.value.json.spec;
   const showV2LibPanelAlert = isV2Dashboard && isSharingExternally && hasLibraryPanels;
@@ -55,34 +54,14 @@ export function ResourceExport({
   return (
     <Stack gap={2} direction="column">
       <Stack gap={1} direction="column">
-        {initialSaveModelVersion === 'v1' && (
-          <Stack alignItems="center">
-            <Label>{switchExportModeLabel}</Label>
-            <RadioButtonGroup
-              options={[
-                { label: t('dashboard-scene.resource-export.label.classic', 'Classic'), value: ExportMode.Classic },
-                {
-                  label: t('dashboard-scene.resource-export.label.v1-resource', 'V1 Resource'),
-                  value: ExportMode.V1Resource,
-                },
-                {
-                  label: t('dashboard-scene.resource-export.label.v2-resource', 'V2 Resource'),
-                  value: ExportMode.V2Resource,
-                },
-              ]}
-              value={exportMode}
-              onChange={(value) => onExportModeChange(value)}
-            />
-          </Stack>
-        )}
-        {initialSaveModelVersion === 'v2' && (
+        {!isV2Dashboard && (
           <Stack alignItems="center">
             <Label>{switchExportModeLabel}</Label>
             <RadioButtonGroup
               options={[
                 {
-                  label: t('dashboard-scene.resource-export.label.v2-resource', 'V2 Resource'),
-                  value: ExportMode.V2Resource,
+                  label: t('dashboard-scene.resource-export.label.classic', 'Classic'),
+                  value: ExportMode.Classic,
                 },
                 {
                   label: t('dashboard-scene.resource-export.label.v1-resource', 'V1 Resource'),
@@ -107,9 +86,7 @@ export function ResourceExport({
             />
           </Stack>
         )}
-        {(isV2Dashboard ||
-          exportMode === ExportMode.Classic ||
-          (initialSaveModelVersion === 'v2' && exportMode === ExportMode.V1Resource)) && (
+        {exportMode !== ExportMode.V1Resource && (
           <Stack gap={1} alignItems="start">
             <Label>{switchExportLabel}</Label>
             <Switch

public/app/features/dashboard-scene/sharing/ShareExportTab.tsx

@@ -112,10 +112,6 @@ export class ShareExportTab extends SceneObjectBase<ShareExportTabState> impleme
     const metadata = getMetadata(scene, Boolean(isSharingExternally));
 
     if (isDashboardV2Spec(origDashboard) && 'elements' in exportable && exportMode !== ExportMode.V1Resource) {
-      this.setState({
-        exportMode: ExportMode.V2Resource,
-      });
-
       // For automatic V2 path, also process library panels when sharing externally
       let finalSpec = exportable;
       if (isSharingExternally && isDashboardV2Spec(exportable)) {