Terrain editing created seam between collision mesh and visible terrain mesh

I have included two screenshots of the problem. I’ve edited the terrain and then tried to undo some edit, there is a difference between the visible mesh and the collision mesh between some sections of the terrain. The terrain is large, aprox 5km x 5km.

Can I fix this?

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://forums.unrealengine.com/unreal-engine/announcements-and-releases/1410408-unreal-engine-bug-submission-form

Thanks