In the patch notes, Nick stated that unique variants can now be locked.
"Unique Variants
You can now ‘lock’ Unique Variants in Punch’s shop when purchasing the two and three UV tickets. Locking UVs will retain them while you roll for new ones!" (idk how to quote or link srry)
Anyways, I need some clarification. So basically, we can lock UVs and roll for new ones right? However, what I need to know is if you (hypothetically) have two UVs, one you like and one you don't like, and you decide to lock the one you do like, when you choose to reroll for a better UV, do you choose to roll 1 UV or do you have to roll 2 since you have 2 UVs but you only want to change one? I need to know this before I try to roll better UVs on my weapons because I am poor.
pretty sure you can lock one and roll for "2" trying to result in obtaining the locked one + one more one thats desireable. Otherwise it would seem horribly broken if you could just do them one at a time for all 3.
The system seems to be from what I read a way to get 3 desireable ones without having to do it all on the same roll.