What does it mean for approved 140 status update 2 times? angel72032006-07-03 21:18:15

Concurrent submitted 140&485 to CSC on Sept. 2005, Then transfer to TSC.
My 140 approved on Jun. 29. But I found my 140 status updated 2 more times on Jun 30 and Today July 3.
What does it means? Thanks