Existing nets are deleted from a design in Standard Editing mode (unlike other net editing operations, nets cannot be deleted in the Net Editing Mode or All Nets Editing Mode).
Alternative 1: Press the <Delete> key on the keyboard.
Alternative 2: Right-click on any of the highlighted nets and select "Delete" from the pop-up context menu.
Alternative 3: Select "Delete..." from the Nets submenu within the Design menu.
Alternative 4: All nets can be deleted from a design by selecting "Delete All..." from the Nets submenu within the Design menu.
Warning - Deleted nets are permanently removed from the design. They can only be restored by reloading the design without saving (although all other current changes will be lost).
