Hello,
If my memory serves me, I already reported this, just wanted to confirm:
When converting IPM.OLE.CLASS to MapiCalendar I’ll get:
The IPM.OLE.CLASS message class is not supported by now
Not fixed in 23.1
As you know, if you make changes to a single series of a calendar recurrence it will have IPM.OLE.CLASS message class which is a calendar item indeed
Wise to add The IPM.OLE.CLASS to MapiItemType enum as .Calendar