Cant see anything that would cause the axis to physically move in your xml.
When I MDI a tool change the DROs change to reflect the tool table I have loaded but the axis do not physically move.
I did notice you had the A channel of the MPG set up to the same pin as you have for X Home switch, that doesnt seem right but would not cause the problem you are seeing.
If you change the tool change option on General Config to Auto then MDI a tool change does it still move the axis?
Hood