I recently bought the FM 15 advanced upgrade. I do development for 2 completely different applications - one needs to stay in FM13, the other uses FM15.
It seems as though whenever I open a file - either using FM13 adv or FM15 adv, that all the files in that application convert to FM15.
This is unacceptable since the one application relies on extensions that are no longer available in 15.
How can I prevent a file from automatically being redirected and updated to FM15?