Freight should be calculated in GRN w.r.t Std cost

Hello team,

In my business, price control in raw material (ROH ) is S

I am creating purchase order with below details......

Materal - XXXX

Qty -1

Price - 100 $

& material standard price is also 100 $

In my purchase order fright is 5 % on material standard cost i.e. 5 $.

Now i am changing material standard cost to 110 $ ( this activity occurs once in year). & old  PO is still open.

For Old PO , system should calculate freight against new standard cost i.e. 5 % of 110 $ = 5.5 $

Also i don t want to change this PO but this should calculate automatically in GRN.

Is there any way to have this settings in MIGO ? can we make ZMIGO transaction by giving this logic?

Please suggest.

Prashant Keluskar