[Acc 10.3.1, HP Pavilion g6-2306el, Win8]
When I remove an item from the library, in principle the modules files still remain in the Program Data folder. However, when I try to put the module back in the library using the '+' button, Accordance couldn't find the module, since the file doesn't have an extension. When I select it using the 'All Files (*.*)' filter, Accordance says that the file could not be recognized.