I have fairly frequently been in the situation of being in the middle of providing an answer to a question when it is closed, leaving me no option but to discard my contribution or hope that the question can be re-opened.
It can be very frustrating to put in the mental effort to prepare an answer only to have it summarily rejected. Of course, this affects frequent contributors more than others.
I wonder if it is possible to let such "work in progress" be entered into the record when this happens.