Modern Warfare 2: Prestige Titles
Solution 1:
Yes, you should have absolutely no issues doing that. I believe you should have most all of the Prestige related titles already, but I haven't gotten to 10 yet myself.
For more information on what you need to do to get the titles, the Call of Duty Wiki on Wikia has a full list of all Titles. The Prestige related Titles are listed with a green background.