Calendar Version Store question

Apr 3, 2015 at 1:02 PM
To locate my own calendar meetings using MFCMapi for my own mailbox I go to Root Container->Top of Information Store->Calendar, then Open Contents Table.

However in the course of troubleshooting a users corrupted Calendar, I find that the meetings in that Calendar don't match what I see in OWA when I view their Calendar.

Instead for this user, the location of his calendar meetigns seems to be: Root Containter -> Calendar Version Store
Howver there are many more meetings listed in Calendar Version Store than exist in the Calendar when viewed through OWA.
I tested this by re-naming a couple meetings in the Subject Line so i could easily identify where his Calendar meets are.

What does this all mean?