Sinister Armor.
yes you can do that, I have personally done that already (pre HoT though so they might have changed that but I see no reason as to why they would have changed it)
so go enjoy your new condition dmg against the insane toughness
Yeah you can, but remember that you lose any existing upgrades when doing so.
Sadly, the fractal merchant is still disabled so you can’t even extract your upgrades.