Has SWIY tried again? SWISM screwed up his first attempt somehow (actually, he often doesn't get it right the first time). He usually doesn't give up until he's tried something at least 3 times...
FYI, all of SWISM's safrole comes from ocotea cymbarum as well, it's what the store had and he wasn't picky. He gets about 85g of safrole out of 100mL of oil via slow crystallization in the fridge (needs a seed crystal though if not in the freezer). Distillation of the residual oil yields even more safrole. The details on this he found somewhere in TFSE...
Safrole's identity was confirmed via odour, visible properties, density, mp, bp, and the fact that after treatment with KOH the mp and bp change to correspond with those of isosafrole, so he's fairly sure.
And about the peracetic... I think something was wrong with the peracid for SWISM's first attempt, he noticed some O2 bubbling in the flask he prepared it in along with a little white precipitate (where'd *that* come from?), he decided to ignore that and used it anyway after 9 days of aging, the isosafrole went through practically unchanged. Btw, I was hanging out with SWISM and happened to notice some more peracetic acid aging, on day 2 it had a little bit of that white precipitate again (no noticable bubbling though).
Edit: FYI, it's Chromic's peracetic method that SWISM's been following.