I'm experiencing a problem where some of the elevation dimension markers that I'm placing in building sections & exterior elevations have disappeared. I originally attached them to tops of walls, slabs, etc. After experiencing some missing markers, I replaced them with static dimensions, but still there were a few missing the next time I logged in. This only occurred with a few of the markers, not all. As I've replaced the missing ones the problem has decreased to where I'm not finding any of them missing any longer, I just want to avoid this on the next project. Any suggestions? Thank you.
