Maybe it wants to implie that when A3 is out of filament it will go to A4 and if you reload A3 it could go from A4 to A3 again if A4 runs out too.
I have not tested it.
Maybe it wants to implie that when A3 is out of filament it will go to A4 and if you reload A3 it could go from A4 to A3 again if A4 runs out too.
I have not tested it.