There are no dumb questions, just dumb answers
Due date means the theoretical limit when your file is due to further attention/next step by the officer. Luckily, they don't wait for that time before they look into your application again and make it process one step further.
On my prior applications i've seen not once that due date might be also past due and still no further action was initiated , nor the date was changed so i would not put much attention on it. It is just set one year from your AOR more or less.
PS. Was it a dumb answer?