[quote=@jynmi88]
[@Archmage MC]

<Snipped quote by Archmage MC>

It's not really a 'loss' of powers per say.  It's more along the lines of losing the understanding/ knowledge of the powers.  I think innate abilities like physical strength, or tough skin stay.  Although, I'm not sure how strong the powers will remain after coming through.    
[/quote]

Also what about weapons? Arthas the Lich King for example, all his stuff is in Frostmourne.