Subdivisions get lost after crashing/restart

[stephomi]

Loosing Reversed Multiresolution Levels

It doesn’t store the multiresolution to save memory, it’s done by design. However Nomad tries to reverse the mesh if it has multiresolution at loading, but only for polycount <400k (or maybe a different threshold). If you the reverse fail, try to load the file again by enabling keep topology at import in the Settings. (in some case reverse can fail because Nomad merges some duplicate vertices or faces here and there).