[therealmf]

Wrong!

The "Output to Amp" 1 and 2 are totally independent from the main outs (XLR).
If you set one "out to amp" to a setting that doesn't contain the cab simulation (e.g. "amp output" or "rig output no cab") it does NOT influence the signal on the main outs. What does happen, however is that when you set Output to amp 1 to deliver "Rig out no cab" then automatically also Output to amp 2 is set to that setting, because the 11R is "assuming" you want to record/amplify in stereo. So there is a connection/dependency between the two "Output to amp" jacks, but there is NO connection to the main out jacks (XLR).