FormChangeButton cannot detect at sub folder of parents

[AmazingTrans]

I created multiple subfolders under the main project. I kept the mainform under the main project.
Is it possible for the formchangebtn to detect all sub-folders for forms instead of just the parent?

Also, where are the string store once it has been detected? I noticed the string stays even the form is removed.

[Archie]

The FormChangeButton uses reflection to find the current forms. You must build the project for the list to be updated.