UCR Rate Problems: Health Insurers Covering Up Their Mistakes

Now that it is widely alleged that the Ingenix UCR rate data invalidly reduced medical provider reimbursements, what are the insurance companies that used the database to reduce medical claims doing about it?  Charged with such knowledge are they reviewing and auditing their claims payment history and paying providers back for the wrongful reductions?  You would think that when the insurer learned of such a systemic problem it would take its obligation to pay claims seriously, retrospectively audit its claims paying practices and re-pay wrongfully reduced claims.  How about notifying its insureds about how UCR rates are calculated and changing its insurance policies to disclose exactly what standard will be used to determine usual and customary charges?  I have seen audioconference advertisements targeted at insurers as "Health Plan Strategies for Minimizing Financial and Legal Risks" but I have not heard bout one insurer proactively auditing claims to pay back invalidly reduced UCR reductions.