Haven’t had much time to look at it but I’ve started looking at it again today. When I look up the problem with the GENERATED_BODY(), I see solutions that say check that the header is included. “ReplicationGraphTypes.generated.h” is included but I see #define FID_Engine_Plugins_Runtime_ReplicationGraph_Source_Public_ReplicationGraphTypes_h_596_GENERATED_BODY is defined there but no GENERATED_BODY().