O2 sensor issues

[Calichase]

So this weekend I Decided it was a good time to get my car back up and running (haven't driven it since at the track the last weekend in March)

When i start the car it idles and sounds fine but then starts to misfire in cylinders 4,5, and 6 if i let the revs drop to idle. It's definitely an o2 sensor issue. So I grabbed my scanning tool, and it's showing that I have misfires in cylinders 4,5, and 6, and that my post cat AND pre cat o2 sensors are switched.

This all Stems from when I replaced my post cat 02 sensors in January and found that I actually have the wiring such that it was reading bank 1 and thinking it was bank 2 and vice versa. So I when doing the install I reversed everything to "correct" and my car drove for about 250 miles perfectly fine and then attempted to adjust to the change and confused itself.

My plan is going to be to swap reverbs t back to where they were before. I guess this is the perfect example of "if it ain't broke, (meaning the wiring layout before) don't fix it"

[Jumbosock]

Im confused. You said you had your banks switched but then talked about switching your pre and post cat sensors which are on the same bank. Are you sure you didn't correct incorrectly?