Converting Items From Older Wynncraft Versions

Hi, I've just recently gotten back onto the Wynncraft server (haven't played for the better half of a year because of studies), and all the drops that I've been getting won't stack with the items originally in my inventory as the drops have a new NBT tag that prevents them from stacking properly. I can't use my old emeralds (blocks and items), and things like zombie flesh and string won't stack. Is there a way to convert those items, or should I just get rid of them? Thanks!(P.S. Couldn't find any answer related to this problem on the F.A.Q, so I apologise in advance if I missed it :P)

 

You can convert the emeralds at selchar bank.

 

There's a converter merchant at the Selchar Bank which converts old emeralds/EB/LE to new ones. However if you don't want to take the trip you can just downgrade to 1.7.10 and trade it with a regular bank merchant.