For txt, I let it stay similar format to the msg tool. That means one lang one txt file. For csv, I put all the languages into one file, with the msg entry name, its guid, and attributes. I think this ...

1 Pasting Ctrl/Cmd + V will paste only table with two or more columns 2 Hotkey Crtl/Cmd + Alt + V will paste table with one column as well reassign the Hotkey from ...