Noob can't get the fluid simulator to behave.

These are probably really dumb questions, but I’m butting my head against a wall here. The fluid simulator bakes all the frames that are active in the timeline, rather than using the “Start” and “End” settings. I can see the simulation working in the viewport - even when I set the viewport to “Final” instead of “Preview”. But then, when I render a frame - all the fluid is gone!

If anyone can help a poor, confused newb I’d be eternally grateful. :o

I tested here and works normally, if you upload .blend is easier to see the problem.