Situation: On the 2nd of January I had a meeting with my supervisors and agreed on a new task list for the new year, one big task specifically assigned to be finished for end of first quarter (late March).
January 21st a gantt chart was released to us with the project included on it, except the due date was now Feb 4th.
Now, it's been internally noted (3 times) in an all-hands discussion by my supervisors supervisor that my project is not complete and should have been by the end of last month, January. This guy was in the initial discussion where we agreed on the original deadline, and is also the guy who made the incorrect gantt chart.
Question: How should I approach my supervisor about this? I'd like to do it with as little friction as possible and move on, but I'm concerned it'll reflect in a performance review or something in the future.