AI Studio Publish/Republish broken for existing app – wrong Cloud project selected

I have an existing Google AI Studio app that is already published and currently working correctly.

The problem is that AI Studio no longer offers the normal Republish flow. When I try to publish the latest version, the new Publish wizard selects a different/default Google Cloud project and treats the app as a new deployment.

If I try to switch back to the original Google Cloud project, AI Studio shows:

“This project is locked because it is already attached to this applet.”

So AI Studio clearly knows that the original project is already attached to the applet, but the Publish wizard still uses a different project and does not allow me to select the correct one.

Another important detail: if I open the existing Cloud Run service and click “Edit in AI Studio”, it correctly opens the same AI Studio app with my latest unpublished changes.

This looks like the internal Publish/Republish association is broken.

I have already submitted a feedback report through AI Studio.

Is there a way to restore the original Publish/Republish connection so that new versions can again be deployed to the existing Cloud Run service and existing .ai.studio URL?