Originally Posted by
aacharya
Could it be the GA wanted to close the flight, and would process the OP after boarding, perhaps to save an open ATC?
Not saying it's the right thing to do...
Not an unknown practice and most likely the reason but given SHARES tendency to aggressively "clean up" itins, it is absolutely imperative to check your itin as soon as possible after this happens. More than once it has led to cancelled future segments -- and/or issues on collecting mileage credit.
^ to the GA getting OP on the flight, so "trust but verify."