Exchange 2010 -> Exchange 2013

Is it still recommended to Disable Cached Mode prior to a cross forest migration (using Prepare-MoveRequest.ps1 and ADMT).

I don't think that its matters much as the mailbox will be re-cached after it has been moved.

Furthermore, while doing the migration, you may check this application too (http://www.exchangemailboxmigration.com/) that could be a good help to get this job done in more easier and quicker way without any problem.

Hi ,

Recently we have done the cross forest migration from exchange 2007 to exchange 2013.During that time we didn't disable the cached mode and also we didn't face issues.

So there is no need to disable the cached mode if we go with the proper steps.

As an additional info , During cross forest migration we would be having cross forest contact on the target forest.While running the prepare move scripts on target forest we need to use the parameter -uselocalobject so that the newly created disabled MEU will get merged with the existing cross forest contact in the target forest.

Because why i am saying is some of the peoples will delete the cross forest contact on the target forest before running the preparemovescript .Even i too had done that same thing.Finally it would make us to face the X500 related NDR errors.So please use  "-uselocalobject" parameter along with the preparemovescript command to create the disabled MEU by merging the existing cross forest contact in the target forest.