When we change the vendor on the PO the rates changes, from what we understand this happens due to NS setting.
Do any one have a working solution for that? we try to contact NS support but they cant help.
In addition we try to maintain the rate through client script and we manage to maintain the rates, using the field change and save record functions. having said that we didn't manage to support case were the user change the vendor and the rate.
We really appreciate any kind of help.