That doesn't make much sense. If it can combine then why can't the elite version? If that's the case it has to be a bug. Why would the rare blade that can't be traded be able to cs while the elite can't? Maybe it's not a bug but it's definitely been over looked by the developers. If they realized the seriousness of this problem here it would have been corrected by now. Still I don't see why GM can't just swap it out for a legit normal elite blade. It's not like it happens all of the time with elites. Not everyday does some one get an elite drop even. It wouldn't even surprise me if no one got elite gear to drop for the next couple of months. I really hope they decide to help you out.
yaaaaa .. i don't know why they can't help regarding to this matter as if they can change it easily .. this item was all the player wanted .. then you will receive like this telling them that this blade ain't bug .. they are some items that can be penetrated only .. better on private 12sky2 they can take action very fast as long its a serious matter .. this is not a rare items that you can sell to NPC its an ELITE BLADE .. we farm 15 - 17 hours daily and go to war everytime .. then suddenly it will happen .. they must take action .. hoping they can fix it .. even its not tradable make it can combine like Purple Lotus Blade ( rare )