How to duplicate a project with hierarchical sheets getting new file names?

[ferdymercury]

Related discussion and workaround:

Rename Project with included files

Summary for future users attempting it: 1–Main Project Window, File, Save As 2–Choose New Name in a new folder (for example “NewName”). 3–Quit KiCad 4–In your file browser, go to the new “Saved As” folder, mark all files, choose batch-“Rename x Items” and rename all files (e.g. additional sheets) with still old ‘naming’ in the same way (for example “NewName”). 5–Open the first schematic sheet (the main schematics sheet, the one without a number) in a text editor and change all old links/nam…