BUG: No srcGUID on SPELL_AURA_REFRESH and APPLIED_DOSE
I suppose that's a bug not fixed for a long time already.
So SPELL_AURA_REFRESH and SPELL_AURA_APPLIED_DOSE (Don't sure about REMOVED_DOSE) always have "0x0000000000000000" as source GUID
It was requested a long time ago, and it seemed that Slouken was willing to implement it. Since then, no information at all. I wish I had an US account to bug them about it