Dear Srinu S
You have mentioned Two points ,
2. If you change the PO qty, the same will be reflected in sales order schduline lines confirmed qty, but sales order qty remains same as old qty.
Yes i will agree , as per standard if you change in PO Qnty it will update in sales order
But i thing First point may not be like this ...after creating po if we change OR Qnty automatically wont be updated in PO ..Some days back i have tried With my client so it not worked like this as you said In the First point..
But worked perfectly 2 point ....