So far, so good.
However, I don’t want to edit my artwork in a vertical format. Especially as the art is of horizontal nature.
I tried “swap x/y output to laser” and several variations on origin, but the y-axis always ends up being the shorter axis.
I do not have your problem, but I would design in whatever orientation makes you happy. Then rotate it to match the laser when ready to burn. A couple of clicks of the Comma Key should do the trick.
Forget trying to switch X & Y.
[1] You will be moving the sweeping motion from the Xaxis to the Yaxis. Not a good idea because Y has substantially more mass.
[2] You will have to physically relocate the Home switches if you have them.
[3] You will have to change a bunch of controller parameters, if it will let you.