but am no longer allowed to save in that folder
did it happen since an OS change?
I made the same experience after upgrading to win764bit. even with admin privs. its no longer allowed to change files under default windows program files location.
1. copy your files to any non "windows owned" directory, edit it and move file back to original place, restart APT and the new changed file will be available
2. install APT in any non "windows owned" directory...
its. def. not an APT issue, its a Windows issue...
PS: if you try different editors to edit your template file under program files dir you'll see different behaviour:
1. opening with one program, edit it, save it, close it, open it again and content is gone
2. but opening content with some other programs may give you the changed content.
I tested it with Ultraedit, notepad.exe, editor.exe, word ...
APT seems to follow the windows rules and will not show the changed content...