I recently completed all the achievements needed for the Glory of the Icecrown Raider achievement but not getting credit for saving Valithria despite having the portal jockey achievement. I put in a ticket and was told to submit a bug report. Any help would be greatly appreciated.
Hi, it seems that this bug is still not fixed. Please fix it!
This same problem just happened to me 
Still not fixed…
As of today this bug does not appear to be corrected.
Bug is broken on me
Broken here as well, have the achieves, but not credited on Glory of the Icecrown Raider, does not show as saved on the instance map and can’t progress to next floor.