See this Comm Center thread by Dennis Di Cicco. As of a few weeks ago, his Observations for the Mittelman survey are completing with the ASSERT for the AcquireNow still set True, even though the AcquireScheduler process sets this to false at the beginning of the Observation!! In addition, the first of the three ImageSets in the Observation(s) is not being set to Completed, but the last two are.
See the attached logs and DB Browser screen shot.