"It is worth noting that Haraxvaiti is one of the 16 places the Iranians had passed through before settling down. In Indo-Iranian linguistics the sound shift is from s to h (Vsu, soma/ Av hu, haoma etc); so Sarasvati/Haraxvaiti would indicate a movement out of Saptasindhu (as also Haptahendu) rather than the reverse. This suggests to me a movement of IAs north-westward and eventually into Iran. It could have been a large contingent, and the areas sparsely (or not) populated so that the immigrants could give new names reminiscent of their homeland."