This is a quick bug. Right now URLs like this work: https://preview.addons.mozilla.org/en-US/firefox/addon/18781/ but https://preview.addons.mozilla.org/en-US/firefox/persona/18781/ goes back to remora. Zamboni needs a rule in urls.py to accept /persona/ and then we can have IT redirect that page also. The page should have already been QA'd with the rest of the add-on detail pages so I think we're good there.
https://preview.addons.mozilla.org/en-US/firefox/persona/18781/ still goes back to Remora (Compared with https://preview.addons.mozilla.org/z/en-US/firefox/addon/18781/, which has new Personas code.) Is this not showing up part of the "Preview's not updating" bug?
This was to fix the zamboni issue - the fact that PAMO goes to remora is an IT issue: https://bugzilla.mozilla.org/show_bug.cgi?id=566090