We are moving to new ‘mirror’ subsidiaries that are owned by a new entity. We need to move existing amortization schedules in their current state, with remaining schedules to the new Subsidiaries. Has anyone dealt with this scenario before? If not, I’ll just do some testing in Sandbox and figure out what needs to be done.

Couldn't you just recreate the JE's with the Amortization schedule in the new Subsidiary - and then post all the amortization and then "zero out" the effects from this using JEs prior to loading GL history?