I imported all the pages from out old wiki via dump/import. I now have to go through and accept them all. There's the api, but I can't just list all pages from all namespaces and approve them. I'm still fiddling, but if anyone has an Idea let me know.
Topic on Extension talk:FlaggedRevs
I see on the maintenance subdirectory of the extension there's a reviewAllPages.php
You may be able to mark all as reviewed executing this script from the console