Automatically Update Cross Reference Field in Document Header

I wasn't aware of that restriction, but it can be overcome with a VBA macro.

You should be aware that the text that you see in the presented document isn't in that sequence in the Word file. Some text can be 'called in' to show at different points. Headers and footers are a good example. In many documents there is only one header and one footer, so the text isn't repeated in the file. This saves storage space for repeated text.

Even if there are different headers and footers, they are still kept separately,

The different types of text are called StoryRanges and sometimes there are several StoryRanges of the same type, so to step through them all requires some code to step through each type and then to step through each instance of that type.

This macro will update the all the fields in the document, so make it the exit macro for some or all of the formfields

Sub UpdateAllStories()
    Dim myStoryRange As Range
    
    For Each myStoryRange In ActiveDocument.StoryRanges
        With myStoryRange
            .Fields.Update
        End With
        Do While Not (myStoryRange.NextStoryRange Is Nothing)
            Set myStoryRange = myStoryRange.NextStoryRange
            With myStoryRange
                .Fields.Update
            End With
        Loop
    Next myStoryRange
End Sub

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