Moving a Policy changes over to a DR cluster

I am just looking on ideas please on the best most reliable way to move a policy from once F5 APM cluster to another.

I have a primary site of 2 APM's which are synced and changes can be synced between the two. But I also have a DR site that needs the same config changes each, rather than just manually applying the same changes to the DR site policy what do others do to move these changes between sites (they act as completely seperate sites). It's only really the Policy I need to move as I apply the resource setup using TMSH commands and this works well.

Would a policy "export" be the best choice here, or any other suggestions?

I am looking to make it quick and painless.

Thanks, C