Move Public Folder script from 2007/2010 to Office 365 Script created by Ward Vissers
www.wardvissers.nl
THIS CODE IS MADE AVAILABLE AS IS, WITHOUT WARRANTY OF ANY KIND. THE ENTIRE RISK
OF THE USE OR THE RESULTS FROM THE USE OF THIS CODE REMAINS WITH THE USER
Please Select the Choice You Want
Prepare for Migration (Legacy Exchange Server
00) Add the Office 365 Domain Name
01) Take a snapshot of the original source folder structure
02) Take a snapshot of public folder statistics such as item count, size, and owner.
03) Take a snapshot of the permissions
04) Locate public folders that have a backslash in the name
05) Rename Public Folder
06) Checks the public folder migration status.
07) Set PublicFolderMigrationComplete to False
Check Office 365
08) Get-PublicFolderMigrationRequest
09) Get-Mailbox -PublicFolder
10) Get-PublicFolder
Generate CSV Files and create Public Folder Mailboxes (Legacy Exchange Server)
11) Export-PublicFolderStatistics PFSizeMap.csv
12) PublicFolderToMailboxMapGenerator PFMailboxMap.csv
Create the public folder mailboxes on Exchange Online
13) Master Public Folder Name
14) Create Public Folder Mailboxen (Check PFMailboxMap.csv)
Migrating the Public Folders
15) Export mail-enabled public folders from Active Directory
16) LegacyExchangeDN Administrator
17) LegacyExchangeDN Public Folder Server
18) External Name Outlook Anywhere
19) Set the XML file
20) Give the CSV file to start the Migration
21) Public Folder Migration Status
Lock down the public folders on the legacy Exchange server for final migration (downtime required)
22) Lock the legacy public folders for finalization
Finalize the public folder migration (downtime required)
23) Finalize the public folder migration (downtime required)
Test and unlock the public folder migration
24) Add Public Folder to Test User
25) Unlock the public folders for all other users
26) Public Folder Migration Complete (Legacy Exchange Server)
27) Public Folders Enabled Local
Final Check
28) Take a snapshot of the original source folder structure.
29) Take a snapshot of the public folder statistics such as item count, size, and owner
30) Take a snapshot of the permissions
99) Exit 
Download: https://gallery.technet.microsoft.com/scriptcenter/Public-Folder-Migratie-to-25bd50a0