We are having a sporadic problem with finish dates for sequences being there when the sequence has not been finished.  It looks like its related to using WO-K-C to create multi-date work orders.  WE made a work order 1234-1 for 4 and used WO-K-C to make work orders 1234-1,-2,-3, and -4, with different start dates.  When the sequences were finished for the first two in April, the dates were also entered (by DBA not us) into the second two which had not been started yet.
Since we do not use scheduling, and when we finish them for real the date changes to the correct finish date, this is a minor annoyance, but I am always uncomfortable with bad data!