Proto Indo Anatolians in historic Armenia. Late Proto Indo Europeans are from Steppe.
What You think about this theory.
Keep in mind that after Kur-Arax Armenia witnessed an influx from North. Most of ancient Republic Armenia in MLBA and EIA is predominantly R1b and I2a2b (I2c2). The oldest I2a2b is from Trialeti Vanadzor culture 1900bc. There are also J2 , E-M84 that I described. And also G2, J1-P58, and Z1828, T1a1.
So denying the existence of this migration is a waste of time. But You can feel free to give a different interpretation of those migrations.