Dear NTO,
This is one of those "it depends" questions, and it depends on why the information was deleted and by whom.
If the lender, after reviewing its records, deletes the information, the lender is required by the Fair Credit Reporting Act (FCRA) to notify other credit reporting companies to which it reported the information to remove it as well.
If the lender fails to respond to the dispute within the time allowed by law, or the credit reporting company removes the information from its records for some other reason, the other credit reporting companies will not be aware of the change.
In those instances, you will need to contact the other credit reporting companies and dispute the information independently through each of them.
Thanks for asking.