ML - Using PPL, PNL, PSL account modification

Hello,

We are using ML,for different reasons mainly described in OSS note 483493 - Posting logic of the material ledger closing; we would like to extend posting with account modifications:

PRY-PNL    
PRV-PPL
PRV-PNL
We are in ECC EHP8 last SP.

When I extend OBYC with all the details and launch the ML cycle, the system doesn't take into consideration the new entries. Do you have any idea why?