I’m using the nightly build version of OF for Android from yesterday (Halloween 2019).
I tried to use the Project Generator for Windows (on Windows 7) to create a new project with one AddOn in a folder in MyApps that already existed but was empty.
The project Generator said it succeeded (although the thumbnail showed only one line of action).
But actually nothing was put in the existing folder.
It should: either use the existing empty folder, or refuse to create in a location with an existing folder, and report that it failed.