Glad you got it working. I am not 100% sure on the format either without doing some more research.
However, I will tell you that I manually create .reg files with notepad on my PC all the time and save them with the default encoding of ANSI and they work fine.
There may however be some certain complex registry keys (like multi_sz) that requires unicode.
There are so many different formats out there with different devices and the different reg programs (seemingly older Win CE versions had slightly different format too).
That is why I provide the ability within SASHIMI to both export and import so you can be sure that what it takes out will go back in.... Once you start using other 3rd party programs you may run into these compatiblity issues.

