achievement problem

I was doing http://www.wowhead.com/achievement=6613 and I was only missing Deadwind pass. I caught 2 pets there, but did not get credit. I tried relogging and now all the credit for the achievement is gone! Does this mean I will have to start over? Has anyone else had this issue? I have filed both a bug report and a ticket but as usual it just gets marked as resolved and closed without any answer except from a bot :/ Something about how they're not allowed to give game hints.