Remove last purchase rate in PO for ever

Hello
when we update ERPNEXT to v9 we removed LAST PURCHASE RATE in print of PO , but now we updated to V10 and again show LAST PURCHASE RATE in print of PO , how we can remove it for ever so next time we update again not come ?
Regards

Do you have a Custom Print Format or did you modify the Standard one? In case you have custom print format, don’t include the field on your custom print format

hello
Thanks for your reply .
I customized PO and on “sb_last_purchase” click on “hide print” , but still show last purchase price in po , how we can hide it in PO ?
Regards