Java SE (Java Platform, Standard Edition)

At our company we have many installations of JRE. On one machine we may have both DST compliant versions and non-DST compliant versions (don't ask - we could never consolidate JRE's to one version due to many different 3rd party apps we use and our developers use).

I have created a script to run the updater tool on all versions of JREs installed. I had hoped the utility wouldn't change already compliant versions, but it appears that it does..... it actually down-revs the files.

Does anyone know if there is a way to run the updater tool globally without affecting compliant versions? We have thousands of machines and it would be nearly impossible to test updating all versions of JRE to a compliant one, and it would be too difficult to single out all non-compliant versions.

Any info greatly appreciated.
Thanks.