Exchange On-premises to Office 365 calendar Migrations

One of our long time friends of Sumatra is considering an on-premises Exchange to Office 365 migration and has determined that the lack of a full-state calendar migration is a problem.  All meetings come over as appointments without guest lists or they come in through the long, tedious PST method and there is no way to easily re-map the addresses.

Not that we predicted this coming issue a few years ago or anything.

So the short answer is: yes, we can handle this, keeping the meetings and guest responses live.

Anyone else out there looking to be an early informed consent test subject?