I have a user that has a spreadsheet with a built-in query that asks for a
date parameter. Every couple of weeks, however, she loses the query and has
to use a previous spreadsheet; she cuts and pastes the new data in and it
works.

What I don't understand is why I can't find the query to edit it or even
figure out what data it's querying. On either the sheet with the query or
the one without, I have all the query buttons greyed out and not working.

Any clues as to what is going on here? I'm totally confused.