I have just upgraded to Engine Prime 1.6 and I have a very weird problem. Out of about 3500 tunes, a few hundred are importing with no musical key data. I use Traktor 3.4 as my master library and I have checked that all key data is present and correct both in Traktor’s key field and I’ve manually copied this data across to the “key text” field which writes it to the “initial key” ID3 tag on the mp3s. All tunes have this, and when I import the library into EP I can see all of the keys, but as soon as EP starts analysing a load of them all disappear… Whyyy???