Ok, before doing it I selected "save ALL to USB" (I don't know what it is but hopefully it saved the current status so that I can revert to it later). And it saved me a .BIN file to the USB.
Then,
I loaded this list to the receiver and it changed me not only the channels (it starts with RAI 1, 2, etc) - it changed the language of the receiver to Italian, the color settings, etc.
I then uploaded once again the list of channels to USB and this time the upload to USB was much slower.
The save is a little smaller SDX file. Different.
The uploads I did before were 30635 KB and this one is 30343KB.
Here is the link to the new upload to usb.
Is there something wrong with my receiver?