when you rename a card, the old name still retrieves a card.
guessing it's easiest to make renaming just wipe the card entirely.
as of now, it's still happening here: http://www.connectipedia.com/wagn/Lane_County%2C_OR+general_info_from_county
("general info from county" doesn't exist, it was renamed to "state general info from county")
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This was happening on Some_punctuation_breaks_search+example, which John changed to be the example on a different ticket. In that case, things were breaking (something to do with a type call on the nonexistent cached card).
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