SimonT,
Good question.
I know on our LL we'll be re-reviewing each AC site by hand to check that the login still works on them. If it no longer works (the site was deactivated), those sites will be removed.
If we find an AC site now using another AVS, we'll just update this info in our databases (since this is a special case with AC sites at the moment).
In general though, swapping AVS's or changing your URLs after approval will get the site deleted and possibly banned, unless the webmaster notifies us in advance.
Peace,
Verbal
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