Lately I have been having a huge problem with vertex editing. I can use the tool and everything goes fine and dandy. But when I close hammer and come back later, everything gets corrupted and warped. For some reason the elevations of my brushes change, as do their angle. Sometimes they will also has portions cut off. Here is what it looks like before I close hammer. This is essentially what I want. This is what I get when I open hammer. Things are in odd places and at odd angles, and some brushes get cut. This is a real sore in my side. I wish my brushes weren't glitching. I'm eventually going to turn those brushes into displacements and have a really smooth hill.