When using ADMT tool to migrate can any one tell me the end user experience. For example if I have two forests in two different locations. I choose to migrate users from forest A to forest B. Will the machines in forest A then be only logging onto forest B on start up. Will migrated forest A users still be able to access the same resources on forest A such as files etc.
And finally what happens their exchange email in forest A. Can they still access or will the mailbox now be inaccessible, thanks
The whole process of preparing and executing migration using ADMT is well described in series of articles linked below: