Ok the visual debugging feature in the Bluprints helped me to track down the problem… i think…
in the Level Blueprint in the Mount and Dismount areas there are these cast nodes for the Horse- and for the Rider Blueprints…
While the Horse Blueprint entries for my custom horse update properly, the Blueprint definition for the Rider does not with my own Character…
eventhough i replaced my Character in the “BP_Rideable_DarkBrown_Horse” Blueprint…
Did i miss something in the process of replacing stuff? 