I have a 2 years B.Com from back home & a CA. I have 10yrs of Account exp, plus a CPA. My firm's lawyers refused to file EB-2 & insisted on EB-3. I know two people form another account firm with the same credentials (even same university) who filed EB-2 & got GC. When I got my H1B, I got foreign credentials evaluated & received equivalence to BBA (Accounting & Finance) based on B.Com & CA. But Lawyers insisted that for GC process USCIS won't consider CA.
Your lawyers are right in that CA is not accepted as education by USCIS. Speak with a credentials evaluation agency about Master's degrees.