A value between 1 and 100 that defines what percentage of the target mailbox will be filled with mail. For example, if you ...

A value between 1 and 100 that defines what percentage of the target mailbox will be filled with mail. For example, if you specify "60," then content is moved until either there is no more content to move or the mailbox is 60-percent filled. At the end of the migration, the target mailbox should be not more than approximately 60-percent full.