Changes Pending checkbox still showing after ECO closed

Getting some really weird behavior on a few parts (only a handful) where after an ECO has been closed, the Part and CAD record still show the "Changes Pending" checkbox checked. 

We have been running into some situations where the CAD gets re-released but the older, Superseded version of the CAD remains on the Part Record BOM instead of the latest, released version floating into place where it is used.