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Relationship fields show IDs by default
Expose additional fields to make related records readable in target databases
After a relationship field is connected, it initially appears in external tables as record IDs only in the target database. This is expected behavior.
To display meaningful values (such as names or titles), module providers should also expose one or more display fields from the related table (for example, a Name field).
Module consumers can then use those exposed fields to show readable values instead of raw IDs when working with related records.