Xpress screens are saved as a script language and the & symbol is recognized as a command and the text is defaulted back to "label"
If you have issues of this type in any text fields, make sure they do not contain the "&" symbol or other symbols from the extended character set.
Even if some work, not all will and it is possible certain combinations of special characters can cause odd issues with the saving and displaying of text fields.
DM06042020