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Disputing items on your CR just masks the score (anything in dispute isn't counted against you) and AUS will pick up on that and certainly a manual underwriter when it passes their desk. They will ask you to have no disputes going through the process.
don't forget that the creditors have 15 additional days (according to FCRA) to update the information being reported to the bureaus too.
Disputes effects your FICO score. As we know that, a good FICO score enables us to get a loan easily.