As part of the Export process, we recommend backing up your library before replacing it with the file MIXO exports. Below is a step-by-step guide on how to do this for Traktor.
1. Find your Native Instruments folder on your system. This is usually under Documents but may vary depending on how you installed Traktor
2. In the Native Instruments folder open the folder for your version of Traktor.
3. Backup everything in this folder. This contains the automatic collection backups made by Traktor but also your settings file and history.