Importing Tracks Issue

Hey, Im having an issue importing tracks to traktor from iTunes and keeping the MIK key.

I don't use MIK that much but sometimes its useful. So my issue is this, after running the tracks through MIK they are showing up in the comments section in my iTunes playlist I just created, as expected.

When I open traktor and go to that playlist all the tracks are there, greyed out and the key is showing correctly in the comments section.

So now, as the tracks are greyed out, i highlight them and click import as tracks as they are now coloured white as they should be. However when I do this though the Key in the comments section gets overwritten by "purchased at beatport.com". I have done this successfully before so not sure what I'm doing wrong this time.

Any help would be great. Thank you.