Problem midi fl studio

Hi!

I don't know if my topic is in the right place, otherwise I'm sorry and I didn't know where to put it!

Once I have a midi file exported with guitar pro 6 for example, I want to modify the midi file with fl studio so that it is clean for the instruments. But once I save the changes to the midi file with fl studio, it takes away the time signature when there are several different ones and puts everything in 4/4! I don't know if with FL Studio, we can avoid that!

Thank you for helping me!