I am using the Command Line Client, in a script that monitors for completion
and will start another one when one completes.

I was able to do a couple of things to help out my situation.

It turns out that "Move Data" will let me put pack the data into a primary
storage pool so I issued commands to get it back to the primary disk storage
pool.

The hard part was figuring out which volumes to move to the pool. It is like
reverse migration.