Personally I believe that the fat 'migration' is actually that when overall fat is getting burnt off, the newer fat only gets placed in higher priority areas, giving an illusion of shifting placement. It's like as if you had water leaking out of five cups, but you only kept putting water in some of them. --It sounds kinda awkward to think that the body would go out of the way to redecide where settled fat should go on any level...it'd mean burning fat it was saving up so that it can put energy into redistributing it...kind of contradictory, right?
Either way, give the body enough fat to work with, but healthier weight range is always a total plus, especially since the body will have a lot of body rework to be worrying about. I don't know what value my assumption is, but, males get a lot of gut fat, so if you get excess weight, you get to be as far as being scrawny everywhere but in the gut sometimes. I would personally try to go ahead if weight's all that's holding you back, and exercise when hormones are starting to work so that it can burn old now-misplaced fat when it starts putting new fat deposits up in the proper areas. Another way to look at it is that you shouldn't make yourself overall underweight trying to get problem areas off, when the body still thinks that anywhere but there are problem areas. ---Excercise that focuses on the gut may also be helpful if you want to try to target it.
