Hello Dcosta,
It appears we may be able to provide a fix via scripting. Let me link you to an older forum post and our documentation regarding the supported script parameters.
Add A-Leg Call-ID as X-CID on B-Leg - 6. Advanced Routing / Routing Scripts - Forum ProSBC
I am working on testing this out in our lab, but thought with your experince you might want to have a look and testing too.
Let me know if you have any questions.
-Support