Engineering Server First stole my gold... and didn't give me server first.
In Wrath I started leveling my engineering almost right away. Buying some ore to get the cool new toys! Then I noticed some of the easy professions getting server firsts (Skinning, Mining...) Then some tailoring and blacksmiths...
After 4 hours of not seeing engineering, and noticing I was damn close, I spent about 20k (or something like that, it was a lot at the time) on the AH buying more mats and powering to max level! I DID IT! but wait... no server first? I figured the engineering server first happened when I got food or something.
2 days later while questing I see engineering server first... WTF?!.... I put in a ticket.
I had transferred over 70 days prior (but not the 3 months needed to get server firsts) so ya... got screwed. Still had all the cool toys and gadgets right away. Made some money selling engineering guns.