SI_CONTRACT and BUAG_MAIN Filters in R3AC1 do not work

Hi,

I have a requirement where delta loads of Contract accounts from ISU to CRM should not happen for a specific CA type. So, i have applied the required filter in R3AC1 on FKKVK-VKTYP field. But it does not stop any such replication. The change in contracts assigned to such CAs should also not flow.

Q1. Will just restricting the CA replication will also stop any changes done to contracts (SI_Contract) assigned to these CAs in ISU to flow to CRM?

I did try to put filters on SI_Contract and followed every step in Note 2056317 But this stops all the SI_CONTRACT replication in my system.