PO Receipts to Inventory and Projects then Issues Question

We are running Oracle EBS 12.2.8 (cMRO, INV, WIP, BOM, CST, PJM, PA, PO etc..)

We are attempting to receive good into inventory using Project Locators  and then run those costs to projects and then issue the same material to that project.

We understand that the costs once received into Projects via Receipts, unless they cross locators or have different costs etc. will not come into projects again.

So we initially were able to get the PO receipts to Projects at the new Receipt cost when the Item cost in cost mgt was zero, however when we then issued the material