Project -> Add Track -> Arranger = “This project already contains an arranger track!”
Well, fine, show it to me then! Clicking the “find tracks” icon (hourglass) shows the tracks listed and they show up in the Inspector on the left, but there are no track with my actual arranger events visible, etc. The arranger track was there once. I drew three events on it. I unfolded all tracks. Zoomed tracks Full. Still not there.
I then noticed that “Toggle track list” makes tracks disappear and searched the manual for that. See “Dividing the track list” on p100 of the Operation Manual.
You can click the Divide Track List button in the top right corner of the project window just below the ruler. (Looks like a “/” and says “Divide Track List” if you mouse over it.) Clicking that, then scrolling brought back my missing lanes.
Very useful feature for dividing tracks into groups that you can independently zoom!
If you have Divide Track List active, you can select lanes and click Toggle Track List to move the selected tracks to the other pane.
*** If you have one pane sized to be so small that it is not visible, Toggle Track List will seem to make tracks disappear! ***
To resize the non-visible pane, turn on the Divide Track List feature (click the “/”) then click on the down facing solid triangle (near the bottom on the right) and select “Zoom Tracks Full”