I believe you can't export a sequence with an alpha channel,(but I may be corrected there), so if you need to export a sequence to use in a different application, I would create a sequence that you could use a chroma key on:
So with your titles on V2, put a colour that is not used in those titles onto V1. Export that sequence.
Importing that into a different application, you can use chroma key to superimpose that title onto new picture.
If part of that title are semi-transparent, and other parts fully opaque, you may have to split those apart and export separately, so you can adjust transparency differently.
If you're exporting to another Avid, just export the titles as a sequence, it keeps the transparency.