Different results for learner completions when using Manage Activities vs. Mass Action?

Summary:

Different results when marking Learners Completed using Manage Activities vs. Mass Action > Mark Activities Complete?

Content (required):

When attempting to mark a learner complete PRIOR TO THE SCHEDULED END DATE AND TIME, the only option available when processing through Manage Activities is Exempt.

However, when the same learner is selected (or a group of learners is selected) PRIOR TO THE SCHEDULED END DATE AND TIME, I am able mark the Learners as Completed using Mass Action Mark Activities Complete

To confirm my theory, I created an Offering:

·        Start & End Date:            April 4th

·        Start Time:                         6:00 PM

·        End Time:                           10:00 PM

At