Moving Public Folders to Office 365 – Issue 2

I simply cannot wait until Public Folders are gone. Increasingly over the years my customers have abandoned them for greener pastures. Yet, I still run into the occasional customer that has Public Folders and insists on moving them to Office 365. Moving folders to Office 365 is almost exactly the same as moving Public Folders to Exchange 2013 or 2016.
** Note ** This article refers to moving Legacy Public Folders which exist on Exchange Server 2010.
Recently I had a client that was existing in coexistence mode with Exchange 2010 and Exchange Online. The migration took a bit longer than planned with the migration of 1500 – 2000 mailboxes. At the end of the coexistence we needed to cutover Public Folder content to the cloud. We did this ONLY when ALL mailboxes were in Office 365. This is done to ensure no one loses access to the folders as an on premises mailbox cannot talk to Public Folders in Office 365.
The article to use when moving Public Folders to Office 365 is:
https://technet.microsoft.com/en-us/library/dn874017(v=exchg.150).aspx
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