Is there a way to get the tied notes to appear as a quaver without having to manually edit them all? I couldn’t see a setting for that particular situation, but I might have missed it.
Also, there is a bit of this weird beam behaviour going on:
Any idea what could be causing that over hanging beam, and how to fix it? It happens in a few places throughout the score.
As it’s an XML import, I’d recommend selecting everything and choosing Edit > Beaming > Reset Beaming just to be sure (unless there’s specific beaming choices you really want to keep). It might also be worth making sure notes don’t have Force Duration activated (the clamp icon in the Notes toolbox on the left in Write mode).
I think the tied semiquavers in 6/8 is expected - I’m not sure there’s a default to get dotted quaver - quaver - semiquaver. It’s a little bit of work, but you can select all the tied semiquavers, press O, then 4 then 5 to force them all to be quavers.
I think Dorico is trying to ensure that two out of three divisions in each of the compound beats is being shown. There’s no option to change this by default.
If you have lots of this pattern and can’t fix it with options, it’s often quickest to force duration on one, then copy/paste it, and re-pitch using lock duration (L) wherever else it is needed.
My preferred way does show two out of three subdivisions per beat, and is much more legible to my eyes at least (especially for the 2nd beat, which without Force Duration looks ludicrous).