LucidSW - 1:58 am on Mar 24, 2011 (gmt 0)
No matter when a campaign was created, it must follow today's rule, even if the campaign was following yesterday's rules. The fact that a rule was changed after a campaign's creation does not exclude it from that rule.
But as pointed out, Google is applying the rules on deleted campaigns. This has got to change since there is no way to undo a deleted campaign unlike one that is simply paused. Seems this should be a simple program change. They may have their reason for ignoring that a campaign is deleted but for the life of me I can't think of one.