You have marked the question as assumed answered, but in case this was not your intention, please check the migration documention (I think it is also covering upgrade to QV10, but not sure):
Or search the community, e.g. for Miguel's answer here:
Thanks for your valueable answer. i am not only doing 9 to 10 migration. i am moving to different server also. that means my current server is 15GB ram, i am moving to 256GB ram new server. so i want to know what are all things i have to do in both licence point of view and installation point of view also.