I require special permission to share the whole dataset, so I have provided a trimmed down version of the data. For Ms_points2, I have removed all but 5 features, the schema remains the same. For the table, I have kept the same 5 related records and removed the majority of the fields. A little more background, appraisers in the field will be using an app to edit the location of the points. The table service will be overwritten weekly from an export from the assessor's office database. Therefore, the point layer is editable and the table is not.
It feels like the expression isn't actually connecting to the table service.
Removed links to test data: Deleted feature services