Hi bobk!
You should not mess manually with those things. I would suggest to simply import this flow to a new project (open a new project, import flow → that one) and Dorico will apply its defaults, which are usually near perfect.
Or you can select all and apply Edit>Reset appearance, which should give the same kind of result.
Check that in your import preferences, you do keep only things that really matter…
Dan, your post got me thinking about the staff spacing settings, and that led me to this:
In Layout Options > Staves and Systems > Casting Off, the box for “Fixed number of systems per frame” was checked, and the number of systems was set to 10.
I un-checked that, and the problem went away. Distance between treble and bass staves automatically changed to 10.5 mm.
EDIT: I don’t know how that box got checked, but I certainly didn’t do it!
Bob, if you previously clicked ‘Save as Default’ in another project in which you previously had set fixed casting-off to specify 10 systems per frame, that would explain it. Those ‘Save as Default’ buttons are powerful but must be used with care.
I did the following tests just now, and they seem to point to an issue with the specific MusicXML file (created with Sibelius Ultimate in March of this year):
Opened two files created from scratch in Dorico Pro 2 (i.e., not from MusicXML import). The casting-off checkox was un-checked.
I’m 99 percent certain I did not click ‘Save as Default’ after un-checking it this morning.
Opened another MusicXML file created on the same date as the one in question (also from Sibelius Ultimate). The casting-off checkbox was un-checked.
Re-opened the MusicXML file in question. The casting-off checkbox WAS checked.
Created new file in Dorico Pro 3. Checkbox was not checked.
Is casting off part of the MusicXML spec? (I did a quick search and found nothing about this.)
No, the setting is not part of the MusicXML file. If you start a new project and look in the Layout Options dialog, you’ll find that it’s set because at some point you’ve saved those settings as a default.