the proper path is to speak to Your support to find out the procedures in place in Your organization
what is that You did not understand in the above sentence!
they are the ones supposed to tell how to proceed
the HRECALL is the reverse of HMIGRATE
the existence of the HMIGRATE command is irrelevant,before tackling the technicalities everybody must be aware of the standards and practices
if the datasets have been hanging on primary volumes for longer than it seems reasonable they might have been assigned to an improper management class
talk to Your storage support in order to have them assigned to the proper management class in order to have them eligible for AUTO MIGRATION
for the umpteen time .... speak to Your storage support