Landscape not update foliage position

I work with Landscape Editor now and ran into a problem.

If I make Deform landscape to splines (roads) it make landscape flatten under my roads. But it not update foliage position. The same problem if I import height map from file. This is update landscape, but not foliage position. Is there a quick solution how to update the foliage position?

For now I just repaint foliage again :frowning:

I am having the same problem so wanted to BUMP this.