How to export Natural project

I am trying to export a natural web application to a zip file but when I try to import it back into a workspace it will not run or be recognized again.

How are you supposed to export and import application?

This should work as you expect: Import / General / Existing projects into workspace / Select archive. Perform a Clean build afterwards. If this does not work for you, I would recommend to create a service request with customer support. Best regards, Thomas