Hi
With a correct SQL script, it is easy to get the good corresponding filename for a hash in the vault.
So you can directly copy the hashed proE files from the vault and rename it.
I've alrady done that kind of thing for CADDS, Catia or Office files ...
but since 9.1 , with the file synch mechanism (that's why PTC disallow a direct download of CAD files now), if you proceed by direct copy from vault. You may not have some attributes synchronised from Windchill to CAD parameters ...
regards
Gregory