I think we're all on that page now...
Some of the confusion may be in the terminology. "Channel" gets used for different things, and "right track" can mean either the opposite to left, or it can mean the "correct track". Some people might call the two halves of a stereo track left and right channels and others might refer to them as them inputs or even tracks.
To wind back to your picture 2 below. If I record my mono mic to a stereo track in Audacity I get the exact reverse. The sound records to the top half of that track - which might get called the "left channel", "left input" or various other descriptions, depending on who is talking, and how they think of it. I don't know why yours goes to the bottom, that seems wrong.
If you record something that has genuine stereo capability, down two separate cables, you'll get a signal on both the top and bottom lines. Hooking your piano up via the inputs 1 and 2 at the back, as you do, should be fine.
However, it's common to record mostly as a series of mono tracks, unless they genuinely need to be stereo. Your finally mix will of course be in stereo, but that's another issue. So I might have vocals, bass, lead, rhythm, various bits of the drum kit such as kick, snare, etc all on individual mono tracks. There might even be backing vocals, harmonies, main vocal sung again, or whatever, but all on their own separate mono track. You gain nothing by trying to record your mic on a stereo track.
The puzzle is why your channels seem out of whack...
That makes sense to me . . . they are completely messed up then. It started happening on the old computer so i cant really blame anything on the actual machines. It must be the preamp then?
If I were to buy a new one, do you think that would solve the issue?