Wait, aren’t you talking about his “Replaced selected” feature available in context menu of actor placed in world?
You need select a new actor/mesh in content browser and then it will appear at “Replace Selected Actors with”.
Putting a static mesh component into blueprint would allow you for one-click replacing all instances, but it adds overhead of blueprint actor…
Other alternatives:
- If you’d put all the road fragments into the same folder in World Outliner, you can easily select them all and change mesh in actor properties.
- Maybe using instances would be useful for you? Instance Tool in Code Plugins - UE Marketplace