As described : https://blogs.mathworks.com/community/2011/04/04/guide-guis-in-all-one-file/, it's possible to export a GUI *.fig file (and it's *.m file) to a single *.m file, which is very useful for version controlling a project (fig files are compiled).
However, the generated/exported single *.m file is not easy to edit again if you need to do more changes to the GUI. Is there a way to convert that file back to the *.fig and *.m files, or import that single *.m into GUIDE, so that it can be editable there?