In the score, I have defined the pick-up measure as 3/8 (hidden of course), and for those parts with a rest the engrave version shows a whole measure of rest, rather than an eighth rest plus quarter rest.
The attached shows both.
I am sure there is an easy way to fix this, but so far I have not been able to find it! The properties pane doesn’t seem to have a way to set this back.
The easiest way to define a pickup bar in Dorico is directly in the time signature. In your case, you would want to set a time signature in the very first bar of 2/2,0.75. The part after the comma tells Dorico how much of a pickup you want – in this case, 3/4 of your (half note) beat. Dorico will then take care of all of the rests for you.
From your screenshot, it looks like you didn’t create a pickup bar in the way that I indicated – you created one bar with a hidden 3/8 time sig, and then started a 2/2 time sig in the next bar.
Dorico sees your pickup bar as a complete bar, which is why it is displaying a whole note rest (and displaying the 2/2 time sig in the second bar, instead of at the beginning of the piece).
That’s exactly right. A pickup bar by definition is an incomplete bar, like one beat in a 4/4 measure, or (as you have it) three eighths in a 2/2 measure. If you give the “pickup” bar its own time signature, then Dorico sees it as a complete bar and will display a whole rest for instruments that don’t play.
The way you originally entered things also meant that Dorico started numbering bars with the pickup, whereas usually a pickup is not counted in bar numbering.
I can’t get Dorico to include a pick-up bar at all! The piece is in 3/4, and the part I’m working on begins with a quarter note rest. Any advice would be much appreciated!
To indicate 3/4 with a quarter note pickup, use the meter popover (Shift+M) to change the time signature to 3/4,1. The ,1 tells Dorico there’s a one-beat pickup.