Merging Styles

[Simone1972]

Dear all,
I don't know how to explain correctly.
Is there a way to merge tracks taken from styles that are set with "doubled" tempo?

e.g. Starting from a 2/4 style @ 100bpm, how can I copy tracks from a 4/4 style @ 200 bpm?
Is there a way to "convert" them?

Regards