Hi Venkat,
Except Filter settings in R3AC1, please also check following points.
1. Please ckeck note 757955, 908157 to make sure you have maintained CRM table CRMC_BUT_CALL_FU correctly.
2. Please check if BP replication filter for CRM -> ERP is configured correctly. Please check KBA:1834681.
3. Please check smq1/smq2 to check if there is some BP queues are stuck.
BR
Dean Yan