A revision is a new version of an existing plan. FunBIM links it to the original plan: observations already placed stay where they are, and the version history is kept.

There are two ways to do it:

Context menu of a plan with the New revision entry
“New revision” in the plan menu.

If several plans have similar names, FunBIM asks you to confirm which one the new revision belongs to. Previous revisions remain available from the plan's details.