RESYNC Traktor playlists?

I imported several playlists from traktor on engine prime, and since then everything is ok. Then I edited the playlists on traktor, adding and replacing songs. After updating the Traktor library on Engine Prime, the playlists did not change, so for example I had 300 songs in the traktor playlist and 150 in the corresponding one on engine prime. Do you have the same problem? I had to clear the playlists and import them again.

Not possible

See here