I have made a huge blacklist - of sites that have been successfully 'hit' - and have a different offer I want to send, so I want to create a new campaign using only the blacklist. I've exported it, unchecked and even deleted it from the software, then loaded in the sites (600k) and they all get filtered out. I can't figure this out. Technically, I don't have a blacklist right now as I removed it. Why are they still getting filtered?