The Armenians are going to retreat. No way they are going to hang around in the mountains in "Artsakh" when it is better for them to just leave and go to Armenia itself where they will be more safer.
Anyway this operation in some ways reminds me of Operation Storm in 1995 which was conducted in Croatia which liberated itself from Serb Republic Krajina occupation.
Although the length of the operation and state of actors involved was different (Artsakh had more heavy firepower and ammo supplies than Serb Republic Krajina did) I think the overall nature of the outcome of the operation will be similar. The Serbs could have stuck around and fought but it would have been a massive bloodbath that they would have eventually lost - so the prospect of running away to Serbia was more attractive to them and was the action they took. Also because of the nature of war crimes they commited they were scared to be captured by the Croats and face retribution which was another factor which caused them to flee.
Anyway the Armenians are also no fighters and all they knew was how to commit war crimes because they are ultimate cowards. When firepower was on their side they committed as many atrocities as they could. They live in their minds the fear that Azeri soldiers will punish them once they are captured for what they did in the 90s. That fear of retribution haunts them. No way they take their chances and stick around. They will be on a massive column heading for Armenia itself very soon.