Reply to Traktor pro to scratch upgrade, software only

Hi I have recently purchased traktor pro 2, latest version 2.6.1

Just got a gig playing weekly and they have DJM 900 nexus as the house mixer.

So rather than buy a sound card I want to use the DJM connected to traktor via USB with timecode vinyl.

Since I recently paid the $90+ for traktor pro 2 is there a way to pay for a small update of the software to unlock the scratch function to use with the DJM ?

Thanks.