Collections are not removed when exporting a collection as a project #3240
Description
What are you trying to do, and what do you expect to happen?
When exporting a collection as a project. The collections should be removed as its an individual part.
Image of an exported collection as bbmodel project below.
What happens instead?
Other collections can be still be seen on the collections, which are irrelevant since those collections did not get exported.
Model format in which the issue occurs
Generic
Blockbench variant
Program
Blockbench version
5.0.7
Operating System
w11
Installed Blockbench plugins
No response
Are there any console errors?
