Update Default Buyer on org item form

 Is there a tool to mass update the "Default Buyer" on the Purchasing tab of the Organization items form (INVIDITM)? We have a high turnover on buyers and we often need to change all the items assigned to Buyer "A" to buyer "B" for example. Currently, we run an update script on mtl_system_items but I would like to know if there is another way of updating the org items.

Thank you, Jimena.