Licensing problem

I purchased two profesional licences of store manager but just one of the automated product import module. I was able to register both store manager licences, but I tought I could register the plugin licence into both store manager installation, but now i see i can't. The problem is the automated product import module is now installed and registered in the wrong PC, I'd like to use it on the other one. How could I disable it so I can register it with the other store manager license?