If I create a song in BB, import it to RB, and there add a vocal track, what are my options for adding harmonies. (Not live, as I can't harmonize)

1. Could I import the vocal as a WAV, back into BB to use the TC, and then export it back into RB to mix on it's own track with the vocal on RB?
2. There I could put harmonies only where I wanted, such as on the choruses?

Thank you;

Gene