Yes, so far that's the best conversion tool. And other thing, anything typed in UNICODE is same. I mean it doesn't matter if its typed from Nepali Romanized or Nepali Traditional provided by MPP, the result is same. I use none of the MPP product. I have my own. In other words, the text typed from those tools doesn't differ from mine. If that's still confusing, then, letter क won't be changing whether it's typed from Romanized or Traditional or mine or something else. It will always be क.
Sanir Karmacharya
Font Designer