At the end of every month, millions and millions of items are reported to the 2 credit bureaus. Of course, even if all the members tried to keep them accurate, there would be some screwups.
In the Debtkills situation, AK screwed up twice. First, they posted the Wells Fargo item twice. (Their monthly reporter must have hit the "enter button twice" or had 2 people doing it that month; I dunno)
Anyhow, the item, was required to stay on his/her bureau file until June, 2012, when the 6 year reporting period will expire.
Second, AK screwed up again if they deleted the account prematurely before then. The great majority of times, their entries are to the detriment of the consumer because they (often, deliberately) leave them on too long. Annoyingly, debt buyers try to keep them on there for 6 years from when they bought the account from the original creditor - not the date of the original default. The 6 digit identifier, which comes with all purchased debts, is supposed to prevent that; it connects those purchased accounts with the same debts still being reported on the trade section.
Ultimately, who knows why someone at AK agreed to remove the item prematurely? Highly unlikely anyone would do so, especially for $600.00. They definitely would NEVER risk hanging themselves by putting it in writing. Nevertheless, if you remain dubious, send your creditor one of those offer to delete contracts, and see what response you get.
If they balk, tell them you saw it on the web. And......oh yeh, you can't always believe everything you see on the web, a case in point being:
http://www.oscagencies.com/