I mapped almost everything in traktor pro to APC40.
I did not try but if you want led feedback on your apc for hotcues try like this.
In the controller-manager ad OUT “Select/Set+Store Hotcue” then select note of button/led on your apc.
then in Controller-Range set
min:-1 max-1 for hotcue 1
min:0 max-0 for hotcue 2
and so on…
in the midi-range set min:3 (for light up red) an max:1 (for light up green)
it should work..
on that way i set loop size led-feedback on APC button matrix.
If you need some more advice about mapping traktor to APC, just ask 