There's a Skyrim mod that has been encoding file names in a incorrect, yet working method for several years: https://www.nexusmods.com/skyrim/mods/19281?tab=files As you can see from the attachments on this file (and all files going back 2-3 years), the user is encoding the \ directly in the filenames. Up until sometime around the 7Zip 21 release this worked just fine, file filters on extraction, extracting files, it all worked as expected. 7zip would interpret these names as nested folders and it...