Can you post a sample of the file demonstrating this issue?
I figured out what the problem was, Drove me up the wall. It seems that if I typed Unit Received / Awaiting Assessment it would not work, But when pasted it did. After running my Status's Value list through an encoding detector it appears there were a load of Accented A's hidden.
So whilst in find if a manual search was done using
Unit Received / Awaiting Assessment
FM was looking for
Unit Received /Â Awaiting Assessment
Its fixed now, But thank you for looking