Ouro mission radically different from live?

I decided to try some Ouro arcs. I unwittingly chose an arc in Ouro that I also had on live, Tavish Bell's The Code Merlin (lvl 50, set for +0/x8). I entered the mission, saw all the Possessed Scientists and Burn Protectors and went "oops, I have this identical live mission." But hey, I was there so I got to work. One thing I noticed immediately was that every spawn had a Dispersion Bubble toggle on as I got near, and then they dropped two Earthquakes close by each other. Overlapping Earthquakes are bad news for a Shield Defense brute! I saw my defense drop from a soft-capped 46% to -50% in seconds. I attempted to complete that mission but it was the same story with every spawn. At least two overlapping Earthquakes that debuffed my defense to negative numbers quickly. It was way tougher than its live equivalent.

Out of curiosity after I'd completed it I went back to the (supposedly) identical mission on live. No Earthquakes at all. Spawn after spawn, not one Earthquake (not that I'm complaining!). No Dispersion Bubbles either. Went back to Ouro, got the arc again, Earthquake city, Dispersion Bubbles in every spawn.

So this is really two questions:

1) Are multiple Earthquakes from a single spawn working as intended? I know once upon a time the CoT Earth Thorn Casters used to drop multiple overlapping Quicksands and Castle (or someone) fixed that. Are the Earthquakes supposed to be like Quicksand and have only 1 per spawn?

2) Aren't Flashbacks supposed to be identical with live arcs? Why does the Flashback version of this mission turn into Earthquake hell yet the live mission has NO Earthquake at all? The Ouro mission is apparently populated with Possessed Scientists with radically different powersets.

If anyone wants to see this for themselves I'd be happy to show them on Freedom since I have the live mission saved and it's easy to get the Flashback version.

I have to try it. I have live Demon Ship, 0/8x/n/n. No FF or earthquakes there.

It might be because that map spawns a random set of Possessed Scientists. I have it on Live, and I always get the Stone Armor lackies, and the Kinetics Lts. My friend, Shadow Ravenwolf, usually gets that, but occasionally, he'll get the FF mobs instead. When he does, he'll exit and reset the mission. Sometimes it takes him a few tries before he doesn't get the FF spawns.

Maybe Ouro isn't randomizing, and is just grabbing the first entry in the list, and that's it?

I do know that for my Live version of the mission, I've ALWAYS had the exact same mobs, but I have teamed with others who have the mission, and have different mobs...

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Yes, I've seen 2 scenarious. The usual Possessed Scientists and the FF Mobs. Like Kheldarn just said, I reset the map till I don't see the FF and go about the carnage as usual...(although it's such a long walk back from the Hosp )