Sleep Undress View File Mod is at early stage of development, so it needs to be tested. If you are not prepared for the fact that you may encounter bugs when using this mod, please wait for the stable version.   This mod is developing for AML (russian community). You can use it for your own, of course, just keep it in mind ?   It's lightweight mod that allow NPC to take clothes off  before lying to bed (and takes it on, when standing up).