Reusing a preserve/ follow campaign for a stream campaign

[JuliaKarr]

Hey guys, how do you transition from a general prerelease follow/stream campaign to a stream campaign for a release? Should I create a new campaign from scratch or should I just change the link in my currrent campaign which will have the same ad creative? Not sure if I need to start a whole new algorithm learning process or if I can use what I already fed data.

Cheers, Julia