>>13420587No
Neanderthals were living in Europe before this migration
Denisovans living in Asia before this migration
Humans living in the middle east before this migration
It is more like a later version of humans that first migrated within Africa too, which already had sub species of homo sapiens, then decided to migrate multiple times to alternate locations and inter bred with the existing populations there, Neanderthals, Denisovans, and other possible undiscovered sub species, etc.
The idea that there was simply one single Massive Migration, is utterly ridiculous, if not downright retardation
There were multiple short and small migrations over thousands of years, they interbed with local homo genus species, which eventually lets us have modern humans today
>also for some reason this prehistoric populations had much more genetic diversity than modern humans, probably due to some certain events were populations were reduced to disease or even events like Mt. Toba 75,000 years ago (which also in my humble opinion could've contributed some to reducing Neanderthal populations as they officially went extinct 50,000 years ago) 
