Wagner tuba numbering

I thought I’d follow the convention of having 2 Bb and 2 F wagner tubas in the score I’ve just started on. Dorico is numbering them 1, 2, 1, 2 rather than 1, 2, 3, 4. Is that normal/expected?

You can change this behaviour in Engraving Options > Staff Labels > Numbering.

Got it. Thank you.