Is there a way in the settings somewhere to disallow duplicate time sigs? Like if you’re in 4/4, to make it impossible to reassert the 4/4 (or at least difficult to do so). I am finding that every time I finish a piece in Dorico I have to do an extra proofing pass just to delete the duplicated time sigs (often arising from cut and paste etc.), and it makes me a little bit crazy! (I can’t think of a reason why you’d EVER want to restate a time sig - though I guess I appreciate having the option. Just don’t want it to be the default).
The short answer is No, unfortunately (currently).