We just "upgraded" from Office 2000 to Office 2007. I regret it many
times every day.

We have dozens of templates. Most of them have a small (Ariel 6pt)
line of text in the footer showing the filename and the last saved
date. One such footer line looks like this with field codes revealed
(Shift+F9):

{FILENAME \* MERGEFORMAT}, saved on {SAVEDATE \*MERGEFORMAT}

We have been using these templates for years in Word 2000. No
problems. I think they also worked OK with 2007 in 2000 compatiblity
mode (.doc), but I am not sure, as we have most of them converted.

As new docx files, the small information line is suddenly showing up
with some parts of it in different fonts and sizes. Most of the time,
the AM/PM or the seconds in the time stamp is in Times New Roman 12,
while the rest is in Ariel 6:

Temp.docx, saved on 10/10/07 11:15AM (or 11:15:00)

With the AM or 00 in a different font.

If I select the line and press Shift+F9, the field codes (the stuff in
the braces), is in the larger font.

If I select the entire line and set it to Ariel 6, then it all prints
in Ariel 6. But if I select just the AM or 00 and change that it pops
back.

I thought the \Mergeformat parameter told it to assume the target
formatting, no?

Also, how come only the AM or the 00 is larger and not the entire
field?

I have a solution, now, but I am curious as to what is happening.