I've seen the other questions here about questions being closed, and people being mad that their flags were marked as invalid. But those seem to be on "flag as not a real question", or it was vote-closed by the community.
This one was closed by a moderator as exact duplicate, which is what I had flagged it for prior to closing.
Surely if a moderator deems the post to be an exact duplicate, my flag is actually valid? I'd not be upset with a "disputed" marking, since marking it as "invalid" directly conflicts with what the moderator who closed the question thinks, and therefore the flag would be under dispute.
EDIT: I propose that questions which are closed by a moderator for a particular reason, automatically mark flags for that given reason as "Valid".