Brewery Established Dates, Closed Dates

Why is it that when I look at the Closed Brewerys in Indiana (the page that contains all of them), for Aberdeen Brewery it says Established 2003, Closed 2004, but when I click on the Aberdeen Brewery link, it says Operated 2000 to 2004?

My guess is that on the closed brewery page the established date is for when it was first entered here and that date is looked up by the page whereas someone has typed in “Operated 2000 to 2004” on their page.