Validate Dispute Negotiate Start Credit. Date Opened Date Reported

I have been trying desperately to fix my credit and am so confused by what exactly I should do or shouldn’t do. One question I have is this: Why is it that on certain collections accounts it says “date opened” and then “date reported” , and there’s a difference of 4-5 years between the two? I know with this account its not as if they waited that long to send it to collections. Are they re-reporting it or something to start the clocks over? Can they do that, and if so, how can I find out if that’s the case, and what should I do about it? Anything I can do? Thanks for your help!!
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yes they are starting the clock over
the best thing to do is try to stop duplication
validate, dispute, negotiate
http://www.oskie.com/validate-collection-collections-account-removed-credit-report-completely.htm
http://www.oskie.com/How-much-cost-how-long-does-take-dispute-credit-report.htm

http://www.oskie.com/negotiate-creditors-bad-credit-collections-charge-offs.htm