Florimond Laporte wrote:
In Document Properties / Drawing Sheets I selected "Use different sheet format". I assume that its sole purpose is to add new sheets (sheets 2, 3, 4 and so on), and it works. So far so good.
When you select this option and set a sheet format location, then that sheet format would be added in case you've Show sheet format dialog on add new sheet under Tools > Options > Drawings
If you've both options selected then you'll see the sheet format dialog box to choose from for adding new sheet(s).
But this has nothing to do with when changing existing sheet size/format to a different one. At least I don't see that behavior. Can you capture a video showing the behavior? If you't share but still see the behavior then please report to your VAR.
I selected Show sheet format dialog on add new sheet and it solved the problem. I can now replace an existing sheet without deactivating the Use different sheet format.
Not intuitive but it works.