Hi Lee Ann,
Append will give you exactly the problem you describe.
Did you try capturing the field as a detail record field? If so what problems did you get then?
What is your trap for the detail line? Which character strings do you wish to capture as fields?
You could consider taking the whole line as a field and then using LSPLIT, RSPLIT, REPLACE, EXTRACT and a few other functions as possible tools to break the field up into the component part required using calculated fields. However the practicality of that idea depends on the answer to the previous question!
Lee Ann, Set the trap on the detail line for the account number, and map the account number field. Then, create new Footer Template with a floating trap on the / preceding the number you want. Map the 241 as your second field. In Table View, You can make a calculated field for the account number and the 241.
I just tested it and it should work fine for you that way.