The mine plan consists of visible linework and internal data, including cross-references, containing all data necessary for timing. For this reason a simple deletion of the linework of an unwanted panel is not enough for removing all references to it and is likely to corrupt whole mine plan.
Use the Remove Panel command to remove all the linework and clean up internal data related to panel being removed and all its children panels.
In case if user just wants to remove a panel, but keep its children in the mine plan, remove a panel perimeter polyline and then use Update Edited Panel to tell it what that panel is completed.
Pulldown Menu Location: AdvMine
Keyboard Command: delete_panel