I'd love a solution to this. I just went through this with a client in active development and how can we let the user make changes to the translations, but still allow for added (mostly) or modified keys from the ongoing development.
What clients would like to do is
a) change their keys on production. So we need a solution that will take the keys they have modified on production and not modify them, but add new keys and modify keys that haven't change.
b) allow them some sort of participation in the development phase and ensure their changes from development get into the production release.
If we had that, we'd rock :)
