Armory reporting 9 minutes left to scan. Crossing my fingers!!! Will update soon.
No love with 3-beta.Trying to see if the disable comments fix will resolve the sweep issue now. Will report back in about 45 minutes or so.
So there may be no short-term solution for 0.91-beta for these types of wallets. We will move forward with 0.91 as-is, and plan to get a wallet with lots of these transactions and fix this issue in a point-release, 0.91.1.
Personally I think the bootstrap is a significant enough upgrade to warrant a release. Great feature. I'll have an update on the sweep operation in a little bit. I really hope this works so that I can empty the wallet and send it to you for testing. If not, I'll send you a watching only version.