Attribute Rule Import Fails (FGDB, Pro 3.5.2)

[Remmert]

Since updating to ArcPro 3.5.2 we've lost the ability to import existing stored Attribute Rule files to a newly created FGDB. We can copy/paste the same set of rules from FGDB to FGDB. We can apply the same rules as new rules, from scratch, to a FGDB. Those same freshly created rules can be exported without complaint, but cannot be "resused" by importing anywhere else. The rules are not complex, even simple rules like Check Geometry fail to import reliably. Is anyone else experiencing this issue?

[JayCary]

Would someone be willing to share a configuration of the Duplicate Feature check (with source and destination schema) that we (or Esri technical support) can test?

I've tried various combinations of export/import based on the latest feedback and cannot reproduce.

Thanks in advance for the feedback!