If a board has re-assigned its users to new userids, then this plugin tracks both the old ID and the new ID (assuming it was installed on the board with the old ID's)? In this case, a false positive can be generated because the original ID is no longer the same person as the new userID? And if so, is there a way to flush the old tracking cookies from the server, (...as opposed to telling all users to wipe their own cookies)? Which I guess means losing all tracking data up to that point, right?
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