(How To) Exchange ++weapon in gmshop

[niksan1]

I have used the search but I haven't found it anywhere....so here is my question- how to exchange for example freya wep for freya PVP wep in gm shop and keep the enchants on the wep ...to exchange mamba edge +16 for mamba edge [pvp] +16

[dzumara]

what could be wrong then? ...