I have tried to unfold about 4 models, but each of them came out somewhat wrong. For some reason, unfold 3D didn't unfold textures into UV area, but it came out much larger. I am using Max 2019 and trial version of virtual spaces.
Now I understand that I need to set cuts and all that to create proper UVs, but it should be just packed inside of UV space. Am I doing something wrong ? Also, clicking on "Pack" option doesn't fix this, it packs outside of UV space.