If all else fails, you could handle the situation using a
series of search/replace actions. (Do some renaming in a copy of
the Word document, import from that copy, and then fix the results
using another search/replace.)
It would be quite a bit of work, and you'd probably have to
experiment a bit, but it could be done, I think. You could manage
it using the Multi-file Find and Replace Tool (or a third party
tool like BK Replace 'Em), plus a file renaming tool like BK
Renamer.
Of course, if you can get RH to import the names properly to
begin with, that would be much better!
G