Doing it wrong all this time!

[m_c]

Yes, but when the table is moving towards your belly the Y axis value is actually increasing, so the arrow is moving away from you (imaginary movement). So mathematically it is the same as with a moving gantry type of machine and the same G code can be run. In a moving table machine the X, Y zero of the table is the left bottom corner of the table, same as a moving gantry type of machine.

That was what I was highlighting in my post, or did you ignore the first sentence?