Carry Forward Purchase Orders at Year End - can it be 'rolled back'?

Summary

Carry Forward Purchase Orders at Year End - can it be 'rolled back'?

Content

this is our first Year End, and wish to test the Carry Forward Purchase Orders Budgetary Control process.

we have budgetary control on tracking, and have a parent/child hierarchy.

i am aware that the process can be run in Preview mode, and have done this

Once it is performed in Final mode can the process be reversed or rolled back in any way?  We don't want to be able to do this in LIVE at our Year end - this is purely because we are testing this for the first time and would like to be perform it more than once!  (as we need to test different structures going into our new FY20)