ABL acting in reverse (no replies)

For some reason, my bed leveling compensation is acting exactly the opposite way that it should.

The front left corner is higher up.. yet the plot shows it as lower.

And the automatic compensation reacts the wrong way, making it twice as bad.

Anyone know how to fix that? Everything else, including Z homing, printing etc is working fine.

Also, the plot shows the center of the bed to be higher, when it reality, there's a slight dip in the center.. so yeah, everything is reversed.