Unrolling repeats

Apologies if I offended, I understood your last post to be saying that you were showing a time signature you wanted hidden for the purposes of selecting it, when ensuring the signpost is shown and actively selected should work just as well.

Is this essentially what you want to do? It “should” just be a case of using the appropriate Insert mode scope and making sure everything you need to be repeated is selected. To select both bars in the system track, I’m Shift-clicking. I then Ctrl/Cmd-click the time signature signpost for the following bar, before pressing R twice.

(PS If Insert mode was still active when you were re-inputting time signatures, Dorico will be adding extra beats to fill out the bars – if you want to retain all the existing note positions relative to each other, deactivate Insert mode before changing/inputting time signatures.)