The toolkit should not override Resw files that exist for other languages
Without File History switched on, I would have lost my already existing resource file with human translations while trying out the Multilingual App Toolkit. It is bad enough that the toolkit does not consider such existing translations, but overriding such files without confirmation seems unacceptable to me.
On a general note: For translating a Resw file into another language I would personally not even consider using a special tool. I was actually rather expecting the toolkit would pick up hard-coded strings in code to help with localisation of existing projects. Such functionality does not seem to be implemented.
This is currently being investigated.