User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-6050823-20140807052705/@comment-5043481-20140807203143

If there is a save transfer, MHF2 --> MHFU style, then there can't be much difference between the first part of the story. This restricts new monsters to appearing at high rank in the village or in the guild, which will be new as dondruma is in. I think it is therefore likely that  the new subs and any new monsters will be encountered in higher ranks, like in MHFU rather than in MH3U where new monsters were mixed into the low ranks and the plot tweaked.