How to setup receipts from WMS to ERP without affect the costing?

Summary:

Hi we are implenting ERP and WMS but we have an issue with the receipts because when we receive the PO in WMS We cartonize piece by LPN, so in some order we receive 10 or more lines of the same item, so when WMS send the information trough OIC we receipt a line by each and the costing fails because we are specting total qty.

Quick example: we have a PO with qty 100 in the ERP, we send the PO to WMS and there we receive 100 lines of 1 piece, creating one LPN for each line, WMS send the 100 lines to ERP and the costing process 100 lines of qty 1 instead 1 line for qty 100, all this made in the same reception.