Hi,
No. After copying the data into new aggr, PM will not recognize the new resources or they will have to be manually added in the datasets.
This manual addition loses the backup versions from PM.
My suggestion is, if you are using DFM 4.0 you can safely migrate the secondary volumes in to another aggregate(on the same filer or different filer) without losing
Any backup versions, History data.
Thanks,
Kjag