Remember that the source during the rebuild of the offsite tapes is the
primary tapes.  So, if the primary pool is reclaimed it would be no
different than a backup to copy stg pool.    My understanding was that what
you are saying is only true if the aggregates are in the same pool.  The
other thing is you can do a RECONSTRUCT=YES and it will remove the deleted
portion of the aggregates within storage pool as it is reconstructed.