I just open-sourced https://github.com/16pierre/PlzFixEP The goal of this project is to import beatgrids from Traktor/Rekordbox. In my opinion that’s a crucial missing feature in Engine Prime, that’s why I started this project.
There’s still a few issues with this project, I didn’t have much time so the code is quick and dirty, but the core idea is here - this successfully imports beatgrids on Engine Prime on my laptop (tested on MacOs). Looks like it fails on players though (they re-analyze the tracks)
Feel free to contribute