We are on Sage 2019 standard.   We are using work order, the original version.   I have added a UDF to the header tab. It is a 1 character multiline that can be Y or N.    When a user creates a new work order they enter data to the ML_UD2_TEXT field on the ADDL Tab. Somehow this data then gets written to my my UDF on the header screen.  I know this is a stretch but I thought someone might have an idea about why this happens.  I don't see how or why it does it.