Does DMA move or copy accounts?
Domain Migration Administrator 6.x
Domain Migration Administrator 7.x
By design, Domain Migration Administrator (DMA) will copy accounts to the Target Domain. The Source Domain accounts are left intact in the event that a roll back is needed. The only exception is in a INTRA-forest migration where the Target Domain is in Native Mode. In this scenario, DMA does a Move operation of the account with SIDHistory. Please refer to the following knowledge base article for more information: