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+---
+'@backstage/frontend-plugin-api': patch
+'@backstage/frontend-app-api': patch
+---
+
+Added support for defining `replaces` in `createExtensionInput` which will allow extensions to redirect missing `attachTo` points to an input of the created extension.
+
+```ts
+export const AppThemeApi = ApiBlueprint.makeWithOverrides({
+  name: 'app-theme',
+  inputs: {
+    themes: createExtensionInput([ThemeBlueprint.dataRefs.theme], {
+      // attachTo: { id: 'app', input: 'themes'} will be redirected to this input instead
+      replaces: [{ id: 'app', input: 'themes' }],
+    }),
+  },
+  factory: () {
+    ...
+  }
+});
+```