Can not use Custom Fields defined on a contact_sub_type in dedupe rule
Steps to reproduce:
- On dmaster demo -> Create Student Custom Data set -> add field: StudentID Alphanumeric Text
- Contact -> Find and Merge Duplicate Contacts -> Add Rule for Individuals: and notice that the field is not available:
- I remember finding this bug in 5.21 ESR - it had been fixed in later versions - the fix was backported and was still working fine in 5.27 ESR. I'm not sure when this re-regressed.