DataHoarder18

I recently added 2 8TB HHDs to my das that had a 5TB and 8TB drive already in it. I've used DrivePool on another machine but not this one. I added all 4 HHDs to a new pool and moved the old data to the hidden "PoolPart" folders. The problem now is that the balancer won't pick up those "other" files and redistribute them amongst the new drives. How can I get this is data to be apart of the new pool?