[SECGolf]

So does this change the Square Square classification to 10-5-D? Or is the Target Line to the STARTING target and not where the ball is to arrive ultimately after curving?

I don't think this changes the classification to 10-5-D. As EDz mentioned, adjust the entire machine left, but keep 10-5-A (plane line and stance line parrallel to each other and target line.)
Target line - see first part of 10-5-0 "....denotes the relation of each line to the line of flight"

and then from your post

""Line” terms (“Target Line” etc.) refer to the straightaway direction of Aim."

The word Aim being key to me.

So I think target line is initial direction (as that is how you are set up, or that is your direction of Aim - the ball is manipulated, via spin, to the ultimate target).