Question about boa items

Q u o t e:
If I change faction to another server will I still have in bag all boa items? It's just that I want try ally but I want use my boa items I gathered on this

Yep the items will stay in your bags, as Knortfox already said. An alternative is to simply mail them to the character once it has defected to Alliance, because you can mail BoA items between characters of different factions, as long as they are on the same realm. ;-)