The following thread was posted by a user and replyed by other users:
Ok.. I have already spoke to a GM about this.. I did my Faction change lost my Choppa receipe from my engineering skills.. Anmd it seems to be a problem... Well, Wow! my friend just changed factions & didnt loose theirs!?!?!?! So, where is mine back?? I dont think its fair Id have to purchase the receipe again after I have already learned & lost it during the faction change when others havent....
Go back to alliance or buy the schematic again. It's a different bike for horde and alliance thus a different recipe.
did you post here expecting an answer?
I hear Garrosh stole it from you. Go get it from him
I suggest posting this in the customer service forums.
All items that are lost during transfer to Horde are kept on Gamon, in the inn @ Ogrimmar. You have to kill him and once you loot, there will be your missing items. It's the easiest way to move the faction specific items. So go there, if he's dead, just wait, he'll respawn.