On the Internet I found how to backup the Start screen layout in Windows 10.

copy %LocalAppData%\Microsoft\Windows\appsFolder.itemdata-ms to a save
place. (restore is to copy that saved file over the source file)
but instead of the file: appsFolder.itemdata-ms I find another file:

Can I use this file also as copy of the Starscreen Layout?

thanks for your answers in advance, gabriŽl