Renaming project group is really creating a new group

When you rename a group on the Projects screen, it actually doesn't rename the folder, but creates a new one.

I almost fell of my chair, when my app was gone after renaming the project group it was in. Of course, I went to the folder, to see if it was still there, and it was. In a folder with the old name.

I would suggest that you actually rename the group/folder, instead of creating a new one. Especially since you call it "rename".

Or at least tell, that the apps inside is still available in the old folder :)