Katie was managing 4 or 5 different versions of calendars between her iPhone, Mac, and Google Calendar. It was leading to dupes (and trips!) of things showing up and just making a general mess. So I thought I would help. I get everything reduced to just a couple of calendars synced to iCloud.
Then I go to move her Google Calendar to iCloud like I did with my own GCal. I export her ics file, import it into iCal, and merge it into her normal calendar.
Everything looks normal.
Until iCloud starts sending out acceptance emails to people for meetings from her work calendar (that had been synched with Google Calendar back in 2008 and 2009).
Yep, tens, maybe hundreds of acceptances to meetings that were years old. I’m sure there’s a setting that I missed somewhere, but that just doesn’t seem like the right thing, Apple, now does it?