REST services is not mapping properties to JSON
PRPC 7.1.9
I'm having issues mapping properties on a clipboard page for use with a REST service. The REST service has been working and we recently added a couple more properties to the underlying class. Just before calling Connect-REST I've confirmed that my step page has all the data that I need including values for the new properties. Unfortunately the new properties are not included in the generted JSON. I've enable debug logging for the Rule-Connect_Rest.invoke activity and I can see that the JSON does not contain the new properties. I've tried all sorts of things like resaving rules, clearing caches, and private checkouts to debug this issue without any luck.
Any ideas what's wrong and what I should try next?