[Lava]

If only I remembered where I placed every item
But yes, HoW and TotLM also include components and you may only forge some items if you move the expansions. It's how How and TotLM are handled - that's why the shaman is there to Kuldahar: so you could go there before the final fight.

As for the Halahnavoral

there are different versions of that item and you may actually destroy it and then use the Great Forge in Dorn's Deep (the one before the Lich) to reforge it back. It's going to have different abilities. I think there are 3 versions of that items, some of them are kinda like secrets.

I won't tell more, because: a) I do not remember everything;  b) many players like to uncover such secrets on their own.