Create a BP (A) with a spline. Place it in a map, and drag spline points of it.
Create an empty BP (B)
Set B as A’s parent.
In my current project i exeperience two errors.
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If i move A’s location as an actor, the meshes move, but spline doesn’t follow along, and the spline is now offset.
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When reparented, the spline turn up at world (0,0,0) position.
Set A’s parent as an Actor again, and splines are back on the meshes on the correct position