Here are the steps I used to remove the prior authorization number from the claim.
Pull up Claim# (?)> Go to the Claim - Details Tab> Single click on charge line one> Click on box "Applied Authorizations" > Click on Line # (?) > Click on the "Clear Selected" box in the bottom right corner > Click OK.
The claim should now be cleared of any prior authorization detail. Please Release the claim to complete the update and send to Payor. This ticket will now be marked as Closed. However, tickets are never permanently closed and you can reopen this ticket at any time simply by replying to this email.