How to fix price of consignment article ?

Dear Expert,

In January 2018, we do GR for consignment article (mvt 101) with quantity 2 pc,

In April there is double sales, so we reverse sales.

when we reverse sales ( mvt 252) with article quantity 2 pc , it doesn't assign to consignment special stock. Then we add stock consignment article (mvt 161) with article quantity 2 pc but we can't add value/price.

Then we sale 1 pc of article. So in current condition the quantity of article is 1 pc. the quantity is right, but this article have wrong amount/ price.

How to fix amount/price for this article?

Thanks and regards

Anita