I have a project with many drawings with Preliminary Issues. We want to go to Construction on some of the drawings but not all.
When we go to construction we remove all the previous revisions as start again at C1.
Obviously we don't want to remove previous revisions from the project as they will still be on sheets that are not going out for Construction but just specific sheets. If we merge revisions then we will lose them from sheets that we don't want to send out for Construction.