VIRB edit: Exported GPX track is unedited


when I export MP4/GPX, the GPX track is not edited according to my video editing. Actually it looks untouched and like the original imported track.

Within VIRB Edit, the video and the track are perfectly synced. Also I can verify the track by adding the track map G-Metrix into the video. The red point is then exacly in sync with the position.

Is it a know problem, that the GPX track is exported unedited? I need MP4 and GPX track for indoor trainer cycling like kinomap or FULGAZ.

Thanks for you help,