stock posting problem during UD

Hi,

we are facing following problem while stock posting during UD.

we receive material from vendors... make the GR against a Purchase Order.. material goes to quality inspection...we check it and good ones are transferred to Unrestricted use stock & bad ones are to blocked stock .

Now during UD we enter the good qty in unrestricted use field and bad qty in blocked field. Once save UD. good qty moving to Unrestricted use but bad qty not moving to blocked stock. still it showing in quality stock....but when I check in material movements 350 movement is happening.. what could be the reason...

check the below case 100 stock received from vendor...tried to do 50 to UU and 50 to blocked stock...

Thanks

Kumar