In the tab “Plans“ click on the desired plan to get to the detail view. Click on the button “Copy and edit plan“ to open the edit field. Here you can add the missing CAD file or exchange the incorrectly inserted file for the correct one, e.g. by dragging it directly from your own folder or the clipboard into the gray field “PRINT FILE“ or “CAD FILE“. Click on “Save index and return to list“ to complete the process.