Green items loosing their stats.

Server: ICECROWN.

So yesterday I decided to buy some leather green gear of the AH for my Tauren Druid as I still had some white items without stats on them.

I bought the leather helm: [Righteous Helmet of Intellect] (Req level 47) with 23+ int.
The leather pants: [Righteous Leggings of the Owl] (Req level 48) With 15+ Int and 14 + Spirit.
And lastly the chest: [Imposing Vest of Intellect] (Req level 42) With 20+ Int.

I equipped them all and I got the stats from it -y
Yet when I logged back online today these 3 items had LOST their stats, they just gave the armor and nothing else. I tried re-logging, un-equipping / equipping them and so on yet they did not give me any more Int or Spirit.

YET: The shoulders I bought: [Serpentskin Spaulders] (Req level 48) with 12+ Int and 11+ Spirit STILL has it's stats and works.

And this is the first time this has happened to me + Icecrown is a 7x server so it's not like I will keep these items for long but is this something that commonly happens?

And if so - How can I restore the stats? Thanks in advance for any and all help