For the REF field to update, the Calculate on Exit check box of the cross referenced field must be checked and the cross reference must be in the body of the document and not in the header/footer or a text box. For references in the header footer, use a StyleRef field instead, but for that you will need a unique character style name applied to the referenced text.

From your description, one or more fields has lost its bookmark. Start by checking Text118.

__________________
Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com