I must admit I've never used the method in the document, although it is interesting (thanks for sharing BTW).
What I would normally do is to log on to BW in the destination language and change the description of the objects there.
I recently had a requirement to change description for multiple objects. I used the "script recording & playback" functionality to automate this from an excel spreadsheet. Here's what looks to be a recent guide on how to do this: