Migration of Public Folders Fails with:The current derserialized object size is 78694400.

Trying to Migrate 2111 Public folders totaling 16GB to Office 365.  Individual Mailboxes have all been migrated.  I'm following the details in https://technet.microsoft.com/en-us/library/dn874017 and in running step 5 (for ~8 hours) theNew-MigrationBatch command fails with : "The current deserialized object size of the data received from the remote client exceeded allowed maximum object size. The current deserialized object size is 78694400, Allowed maximum object size is 78643200."

I'm no expert at Powershell or this clumsy migration process so hopefully someone can shed some light on this error for me.

Thanks!

-Joe