Oracle SBCs Registration Cache

Hi All

I am looking for a config option to prevent the SBC ACME from clearing all AoRs for a user if a single endpoint fails to successfully register.

Scenario:
2 devices using the same account details, for example a mobile app and desk phone. Under normal behavior these devices register and the SBC creates a valid AoR for each endpoint.

If a one of the devices start to fail its registration for whatever reason the SBC clears the cache for both the devices. From my understanding this is related to the contact header in the registration rejection message being non-specific (not containing the cookie value of the registration request).