Cubasis 2 now available

I can’t remember where but I read some where that we need to delete Cubasis 1 before downloading Ver 2 on iOS, is that true? If so, will I lose any projects or IAA’s associated with those projects?

Also in Ver 2 can we use the same IAA plug in and use 2 different amp sims on the same track? For instance I have the Amplitude App and I have the Soldano Amp sim and the Orang Amp sim. I like to mix those amp sims to get my guitar sound. Thank you.