The Publish to LX9000 feature was not meant to be missing. I have added it back now.
The way I do it is, on SkySight:
1) Draw a task
2) Download -> Publish to LX9000
On the LX, first time only:
1) Settings -> Files and Transfer -> Waypoints and Tasks
2) Enable SkySight Tasks
On the LX:
1) Task page -> Load
2) Click the SkySight.cup task.
Previously I understand there was a bug that the SkySight Tasks needed to be unselected, deleted, and reselected as per the first time only steps on each task change, but I am told but have not verified that this has been fixed.
You can also do it via Dropbox/Google Drive/WeGlide. I should probably add an option to open it in SeeYou too.