I tested some more with button assignments. Whenever a button is created it is assigned a "button number". This initial number is a value from 1 to 36. The value is initialy a grid position, where upper left corner is 1 and lower right is 36 (the previous page button).
If you copy a button, the same "button number" is assigned. So if you learn something to one of those, the other will get the same learned command.
If you copy a button to another page in the same device, the button value will be the Button number + 40*page number. So button 127 on page one is the same as button 7 on page 3.
If you move a button the value stays the same.
So the easiest way to create a conflict, is to create a button somewhere in the grid, move it to another location, and create a new button in the same place as the first. They now have the same "button number", and learning one of them will also learn the other.
The preprogrammed buttons mostly have values 7 9 11 13 .... (the 3*4 button layout). It seems that the preprogrammed buttons are connected to odd and even pair "button numbers". So button 7 and 8 have the same preprogrammed values. I do not know yet if this is the same for learned commands, but I will test it.
