They left their junk behind, especially things that were too big or too hard to move. They probably had plenty of waterlogged junk, having endured several years of tidal floods that they had not seen in earlier years.
Thor, I’ve had enough of these spring floods. Either we pack up and move the village, or I am going home to Mother. Her great grand daughter probably said the same thing at the new village some years later.
“Helga, go ahead and go home to your mother. I’ll miss you dearly, I will. Honestly.”