order does not matter at all, you can even remove redundant entries (one that you're not changing) from the
-fixed.txt file and only keep those which you are updating.
To switch to english, click on settings -> advanced settings -> Locale -> select US English
if excel does't work you can use a notepad or any other text editor, just note that the english text and translated text are separate by a TAB, if the tab is missing or there are extra TABS on a single line the translation won't work. One line
per translation