I think this is a bug or I might be missing something;
If you voxel remesh an object and set rebuild multiresolution to max (which is 4, haven’t tried it with a lower value yet), once you save the file and load it again all the multiresolutions are lost and only the highest density mesh is loaded.
I’m using the latest version, 1.58
I did a couple more tests, and looks like this problem is only happening with higher number of vertices. If you voxel remesh to a lower density mesh it does save the multiresolution.
It’s not a bug, you can reconstruct the lower resolution with the reverse button (For low poly mesh, Nomad is actually doing a reverse automatically)
Ah got it! Thanks for the clarification!