Hi Folks,
This is my first post here and I am only just scratching the surface with Dorico so what you guys are performing here with the program is far beyond my experience. However, in terms of work flow:
Would it be achievable and worthwhile to create a master page at the end of your flow that remains blank and is in situ for the purpose of copying, sorting and editing excerpts outside of your set pages. Instead of creating a blank page in the middle and performing these edits there, do it at the end of the flow. Then when done, you remove those pages and your layouts aren’t effected.
Does this make sense?