It sounds as if you really want the MyMedia share to end up on the main array? Perhaps you had that share set with the cache pool as Primary Storage, the array as secondary storage and the mover direction to be pool->array? If so setting it back to those settings will move things back to the array.
Another possibility is that you had only the array set as Primary storage and no secondary storage for the mymedia share and were exploiting the fact that mover will do nothing with such shares so any files created on the pool stay there? If so you need to get all the files back onto the main array; manually create that folder on the pool; and then manually move the files that should be on the pool back to the pool.