After using “correct” function for grn it creates another new grn

Hi all,

After using “correct” function for GRN , system creates another new grn for same po.if suppose initially i have posted grn for 2 qty and then i used “correct” fuction and reset the grn qty , system created another new grn for same po.Ideally it iseems to be correct but bcs of this there are 2 grn for same po while client wants single grn for po even though they received the grn partially.

Is it std behaviour..

Is there any setup needs to change in order to have single grn when earlier grn is not reversed

Thanks,

Shri