Just create a new W3Edit project and take the files extracted from quickbms and place them inside your [W3Edit project name]/files folder. Open the mod up and everything should be there. If you right-click a directory and click add file, you should be able to add all the correct envs for the directory.
Use this quickbms script: http://aluigi.altervista.org/bms/witcher3.bms
Use this quickbms script: http://aluigi.altervista.org/bms/witcher3.bms