Close Route Bug Again

[BAEDI]

I'm sorry to be a bother again but when I try to close any route on this aircraft, I get the message,

Route closure not allowed.
Existing route is the only connection between two or more other routes flown by this plane.

This is world W799, I'm airline 1819 and the aircraft ID is 16232.

Thanks

[BAEDI]

It's ok now, because the Close All tool is working.

[Air Elbonia]

That message itself isn't necessarily a bug, if you have a plane on MSP-ORD, ORD-JFK, JFK-DCA... that message will (and should) come up if you try to close ORD-JFK without closing msp-ord or jfk-dca.  (e.g.)