Did you use this ones?
$PRP:"SW- Created Date"
Thursday, May 17, 2007 10:02:23 AM
$PRP:"SW- Last Saved Date"
Thursday, May 17, 2007 12:36:52 PM
$PRP:"SW- Long Date"
Thursday, May 17, 2007
$PRP:"SW- Short Date"
They're automatic values (you can't choose it) maybe you must to use a manual input for some cases I think.
Ruben, I tried using the $PRP links you listed, but I'm still running into the same issue. The frustrating part is that this seems to be a random occurrence, so I can't pinpoint the issue. I think I'll just have to manually enter the revision table from now on. Thanks for your help.