How to clear Invoice price variance of a paid closed PO matched AP Invoice

Summary:

I have put this question in Projects forum as well

Content (required):

1 PO--->1 line--->1 distribution ---> 10.5 QTY ---> 420 $ total amount ---> 10.5 QTY received ---> PO and Line is closed status --->Distribution line is delivered status

1 AP Invoice--->Above PO matched---> 1 line --->10 QTY ---> 420 $ invoice and Line amount ---> Paid

This created two distribution lines for this Invoice line ----> Dist1 ---->10 QTY---->400 $---->item cost, Dist2---->20 QTY---->20 $---->Invoice price variance

Now, In manage Project costs page, This two AP distribution lines are showing as actual cost. At the same time, In Manage Project commitment costs, 20$ commitment cost showing for the PO.