We eventually got it working. Problem is they were NOT legitimate Arceus and Jirachi (Lv.33 and Lv.3 respectively, caught in Johto). I've advised for future that trades here should be legit. only, but hey, the entries are cleared. :)
If you have legit. ones can I clone them? LMAO I can return a legendary if you're missing any (and if I have it yet), but your collection is fairly complete, I recall. I've posted a request in the Quick Trade thread in any case.