Gáva was a different beast altogether. You seem to lack the basic understanding of these being completely different people.I am pointing out that we already have Urnfield DNA from 1300-1200BC which is when Urnfield was expanding. They plotted nothing like Basarabs and were closest to Polish people of today.
I don't know why you are obsessed with Urnfield, by the time Basarabs or Thracians were expanding Urnfield had ended and was only surviving with Lusatians. Kurgans had nothing to do with Urnfield which is what these E-V13 people were using, why are you ignoring that fact?
There was no big scale Lusatian-related migration into the Carpathian basin, that didn't exixt. These were locals from the Tisza groups like Suciu de Sus, Igrita and Berkesz-Demecser.
Read up on those people, they cremated their dead before most other Central Europeans did. Suciu de Sus emerged from around 1.600-1.500 BC onward.