Hi cypha79,
This situation is a little bit tricky because what you should do is dependent on whether the Auctiva store window is already present in your listings.
1) If you have the Auctiva store window in your current listings, I definitely recommend continuing to use your previous account because the store window in your listings is associated with that particular Auctiva account.
2) If you do not have the Auctiva store window in your listings, you can have your token transferred to your new Auctiva account and proceed to use that Auctiva account.
It is not possible to import saved listings from one Auctiva account to another but whichever account has a valid token will import and display all of your current eBay listings.
If your course of action will be #2 above, please file a support request regarding this issue using the appropriate link on our help page:
http://www.auctiva.com/free_auction_software_help/help.aspx-Mike