Boost 90 Keep arena rating.

As title says, if you use your boost on a character @level 70 or 80 85 that has arena rating, you wont get your rating reset with the lastest hotfix who resets your rating when you hit 90

1. get boost
2. use boost on an alt with high arena rating (2200/2400/2700)
3. keep the rating when the char hits 90
4. ??
5. profit

alltho this is most likley going to be fixed in a hotfix but could be fun