I made a minor upgrade in which some dialogs were modified (new strings were translated).
I ran the update on an english system.
Now when I execute my setup again (or from Add/Remove Programs) and choose the "Modify" option, the dialogs are modified as expected, except that the new strings are not translated!

Then I verbose and I realize that the setup uses the 1033.mst file from cache directory (c:\Windows\Installer\{...}\1033.mst) and this one is not updated by my minor upgrade.

On the other hand, the other files (shortcuts) in the cache directory are correctly updated.
What disappointment!
Why the transform file is not update in the cache directory?
I also try setup /fvomus, but same result.

I read that in another forum, but it doesn't actually help me.
Is the only way to update the 1033.mst is to remove it from cache directory via a custom action in the begin of execute sequence?
Other ideas are welcome.
Thanks
I can't believe that I am the only one with this problem.