Age, I don't know how recently you've checked the scheduled/saved listings, but I noticed mine reappeared about two minutes ago...I think they may have fixed the issue for the time being; see if your descrips came back.
Auctiva does have issues - many, sometimes it seems - but I keep reminding myself that the entire service is free; despite all the issues I've tangled with, I've definately saved more money than lost. I try to always switch to the html editor and cut and paste the whole mass of it to a word document before I post/save/etc from the editor - that way, if it goes poof, *I* have a backup.
-Fox