G\L Class code while Sales Update R42800

Hi All,

For a Sale Order while Running Sales Update R42800 from which table/application G\L class code are to be considered.

Ex- we have a sales order for which sales update is stuck due to incorrect G\L class code, now business has changed item G\L class code in Item Branch but in Sales order detail Old G\L class code is there.

in this case while sales update which G\L class code system will check DMAAI setup order one which is in Sales order or new one which is updated in Item Branch.

what is standard functionality.