CFM Securities change Procedure Managm. Procedure for Valuation Area local

Hi to all,

I have a crucial question to post :

how we could change Position management procedure in securities , having posted transactions untill now without

reset and reverse all transactions.

We want to differentiate a procedure for local accounting , but until now we run the same for IAS and Local...

I know that we can to that but if we reverse postings and Initialisation. If we want to avoid this?

Regards

Waiting for your ideas.