We have a ECC passing BDocs back and forth with CRM. We would like to refresh one of these environments in our QA system, but not the other or perhaps use an older copy of CRM. This is mainly because CRM is much smaller DB than ECC. CRM is <1TB, while ECC is >15TB. The question is how can I get the two systems in sync with regards to business partner data? If my ECC system is the master of the business partner data, is my only option to resend all business partner records from ECC to CRM to get them both in sync? This is unattractive as it takes 2 weeks to complete the replication. What other options are there for us?