Yes, you can use the file SyncExchangeRelatedAttibutes.xml, this file you can add how a CUstom Add-in and for default contain only ProxyAddresees in the example, this file is in Program Files (x86)\Quest Software\Migration Manager\Active Directory.
Yes, you can use the file SyncExchangeRelatedAttibutes.xml, this file you can add how a CUstom Add-in and for default contain only ProxyAddresees in the example, this file is in Program Files (x86)\Quest Software\Migration Manager\Active Directory.