Amending Form 5500 in connection to Audit Report - Financial statement section updated to comply standard for Fair value

The 2016 Form 5500 including the Independent Account Audit Report was filed timely.

The Independent Auditor who prepared the Audit Report contacted me and the client, and informed us that the DOL required him to make a change on the Audit Report to comply with the standard for Fair Value. And he did made DOL requested change. Other than that the auditor informed us that he didn't change any number or any opinion on the audit report.

Is there any issue amending the 2016 Form 5500 in 2018 in connection with the change in the audit report?

My office use Relius Government forms.

Many thanks,

AdKu

File an amended return with the updated audit opinion and call it a day.

Curious... how did the independent auditor file the amended audit report... without the Form 5500?