Merchants that keep items.
 

Quick question about a few NPCs. I am not sure what makes a merchant different than another in terms of if they keep or remove the items that are sold to them after you leave there shop. I managed to find one merchant that will in fact keep items sold to him till the zone closes, Zordak Ragefire in SoldungB, just not sure why he does and others will not. Is there a setting for each one that will allow it to keep items sold. Or is there a separate code for each merchant per zone?