One more thought......
Auctiva does keep track of the feedback number at the time of the last TOKEN UPDATE. The number they have in record shows on any preview of the Auctiva one-page lister.
I'm thinking that updating your ebay Token in your profile might update that number in the Auctiva system.
Danno
Edit: FYI...my Auctiva record shows 150, while my actual with ebay is currently 196. That 150 does appear to be about the total I had last July, when my token was renewed.