What trip back home? They relocated to stay.
We can take a look at the MtDNA in their hair to see how many mommies they had ~ bet it's a bunch.
They didn't take women on a 4 year, potentially 8 year round trip journey ~ 'cause babies arrive in 9 months. They took women on a 2 month trip in winter to stay.
It is commonly the case that upper Neolithic peoples have a basic division of labor, and life. The women, children and elderly stay in a village setting year round, and perform duties associated with "gathering" or "preparing". The men are in the village as a base of operations from Mid Spring to Early Fall. Otherwise they are ON THE LONG MARCH hunting for a living. The Iroquois carried this to the extreme of selecting new brides and husbands upon their return. No divorce in their system!
The first Eskimos into Greenland were on a long march ~ hunting for things to eat, plus they may have heard from others of what could be found there. I can't imagine why the men would abandon their familys in Summer.