Thanks for the reply Daniel. As always I have faith that the Dorico team will deliver a great implementation when it comes… just wish it was sooner rather than later.
@piano_jochen as it stands there are workarounds and you can certainly get the appearance of slash notation but they are not semantically correct (slash notation shouldn’t ideally respond to transposition commands), somewhat of a pain to do on large arrangements and is not future proof in terms of how Dorico will eventually implement it meaning potential work redoing slash notation.