You've updated a file that was uploaded to the Digital Assets
Manager (DAM), but the overwritten file does not yet appear on any
sites that reference it. This is because the DAM server cache is
only 'flushed,' or cleared, once per day.
Your updated file should appear the next day. (The cache is
normally flushed before 6 a.m.)
If you have a business critical need for an overwritten file to
be published immediately, contact the UBCMS Help
Alternately, rename the file ('move'
the file to a new name), re-activate it, then move it back to
its original name, and re-activate it again. This will force the
UBCMS to flush the file from the cache and push out the new version
to your published site.