CX Sales Extension - Import an App UI to a new project

Hello,

I had previously created an App UI for another CX Sales Extension project and wanted to reuse it in a new project. However, when I attempt to use the "Navigate To Application" action, I am able to select it but running the action chain in testing returns a 204 Empty file content.

What's the easiest way to reuse previously created custom App UIs? Is there a setting I need to make to access UIs in other project? Is there a way to export a single App UI or is my best option exporting an entire workspace from the older project?