Injecting morphs bypasses the P5 crosstalk protection, this is true for all injected morphs, not just FBMs. I don't know what the FII method is, but I prefer to inject the morphs, save the character to the character library, delete the figure, load the next figure, inject the morphs, save to the character library, delete the figure, then reload both figures from the library. As for seperate CR2s, I'd think that you'd have to have them for V3 and M3. While they may have the same morphs, they behave slightly differently on each character. So, you can make an expression for V3, then apply it to M3, but you'll need to tweak it.