I had an issue where I did a sculpt and exported the file as stl to my slicer. The slicer showed only the edges of the sculpt like a skeleton. Moved it to Meshmixer which didn’t read the file at all. I tried closing holes in nomad and make manifold and it said there were no holes and it was manifold. I Voxel meshed it again and still same issue. I fixed my bring the sculpt into an earlier sculpt saved file and Voxel meshed them together. I see someone else on the FB group had a similar issue. They did the part they sculpted also turn a tan color (from white). I did not notice if mine changed color too.