Soul Swap

[Voidgazer]

I've been wondering for quite long time now about one thing. I am not sure if it was answered somewhere else, but I didn't seem to find it. So, let me ask one question.

Imagine the following hypothetical combat situation:

- I have the buff from Proc #1
- I cast a DoT on my target
- the buff from Proc #1 fades
- I receive the buff from Proc #2
- I grab the DoT (which hasn't run out yet) with SS
- some time passes and Proc #2 also fades
- I receive the buff from Proc #3
- I release the DoT on my next target
- Proc #3 fades

Buffs from which procs (if any) will remain on the DoT that was cast on the last target?

P.S. Also, when Apocalypse (4 piece T12 bonus) procs from a beginning of Drain Soul cast, will it affect the very cast that triggered it, or do I have to reapply it so the proc would take effect?

[Deleted]

only the buff from proc #3