Please remove your Customer Number as this is a peer to peer support channel, and other users do not need your Customer number.  When in the client click on REVIEW and on the diaglog box, uncheck everything but overrides, and that should then allow you to run review on that return to locate overrides.

I know last years software would continue to give me override messages even after I had canceled any overrrides...so if youve gone through Review and still cant find any, its possibly a false message.