2.1.2.4.2. Saving & Loading Floorplans - You can save the state of your Interface Planner floorplan for use in subsequent Interface Planner sessions. Interface Planner saves your plan in Interface Planner Floorplan Format ( .plan ). You can load a .plan file in Interface Planner to reopen the floorplan. - 2025-12-16

Quartus Prime Pro Edition User Guide Design Constraints
Version
25.1.1
You can save the state of your Interface Planner floorplan for use in subsequent Interface Planner sessions. Interface Planner saves your plan in Interface Planner Floorplan Format (.plan). You can load a .plan file in Interface Planner to reopen the floorplan.
  1. To save an Interface Planner floorplan, click File > Save Floorplan and specify a file name.
  2. To load an Interface Planner floorplan, click File > Load Floorplan and browse for the .plan file.
Note: .plan files are for use only in Interface Planner and are not for use directly in the Quartus® Prime software. Interface Planner generates an error if you attempt to load a .plan file that is not associated with the current Interface Planner project.