I try to help you reiji
.. sorry for my poor english vocabulary.. for my experience is better to change only the ValueName part in registrys, and let the other parts in the original ways.
There are many games ( in my case a lot of old games), with registrys in HCKU and HKLM, that change lenguajes in the wrong way, stuck in certain parts of installation, or simply, doesnt work. its normal (in some games), that there is registry keys in two or three places, generally, publisher and developers parts
. (see for example the registry keys in GOG games installations, they have developers, publishers, and GOG registry entries, in three of four diferent places).