This is not correct.
Amp1 is Amp block 1.
Amp 2 is Amp Block 2 (available on the Axe-Fx III only, so that may be our tacit bug.)
Neither of these affects the Cab.
This function has nothing to do with the Cab.
The cab level cannot be set by an FC function.
The FC never "reads" levels of amp or cab.
The big display of my FC6 shows the level of the amp and the level of the cab every time I press the footswitch. That's what I mean with "read the level".
AMP1 Example:
amp level is at -10.0
I press the footswitch with function amp1 -2dB (footswitch 6 of FC6)
the big display of FC6 shows, in 2 lines, the following:
Amp
Level: -12.0 dB
I go to the amp level in editor or unit and put the level at 0
I press the footswitch with function amp1 -2dB
the big display of FC6 shows, in 2 lines, the following:
Amp
Level: -2.0 dB
AMP2 Example:
cab level is at -10.0
I press the footswitch with function amp2 -2dB (footswitch 6 of FC6)
the big display of FC6 shows, in 2 lines, the following:
Cabinet
Level: 0.0 dB
I go to the cab level in editor or unit and put the level at -2
I press the footswitch with function amp2 -2dB
the big display of FC6 shows, in 2 lines, the following:
Cabinet
Level: 0.0 dB
AMP1+2 Example:
amp level is at -10.0
cab level is at -10.0
I press the footswitch with function amp1and2 -2dB (footswitch 6 of FC6)
the big display of FC6 shows, in 2 lines, the following:
Amp Level: -12.0 dB
Cabinet Level: 0.0 dB
I go to the amp level in editor or unit and put the level at -2
I press the footswitch with function amp2 -2dB
the big display of FC6 shows, in 2 lines, the following:
Amp Level: -2.0 dB
Cabinet Level: 0.0 dB
I was changing level of cabs in version 3.01 with this function if my mind is not totally crazy, so that's what I posted this as a bug, because Cab level is always at 0.0dB.
If it's not a bug, and cab should not be controlled by this function, probably it would be good to remove "amp2" and "amp1and2" from the menu options.
Anyway, thanks a lot for your post!!!!! Hope we can finish talking of this issue!!!