It might be useful to add (+your site) that this package is just to help quickly copy files from multiple placed into one folder (so you will have a bunch of files again; and this plugin is not maintained). GeoPackage might be a better option as one file for all (geo database). Project Packager - is a better option, it can Copy/Consolidate into .gpkg as well. (There is also QConsolidate3 with similar functions, but it is also old and had some issues).
