How to join featureclass data based on a predefined relationship class? The option does not seem to exist in ArcPro as it did in ArcMap.
Hi Mike. Looks like you asked this last year as well https://community.esri.com/thread/208980-is-there-featureclass-join-option-based-on-predefined-relat.... That option doesn't currently exist in ArcGIS Pro so it might be helpful to submit this on the ArcGIS Ideas site so that we can get a better sense for demand and use cases. We've tracked and implemented a number of ArcMap equivalency issues through Ideas...
For now, you could just look at the relationship class' properties and use those to create the join in the Add Join tool:
Cheers