AS01 Derivation

Hi Gurus,

We acqusition asset from MM module. We use a dummy asset when we create PO. Everything is working correctly. But I have doubt about derivation in AS01. I dont want to derive any account assignment in AS01. Because I am deriving account assignment elements by dummy asset's characteristics. The budget consumes when we create PO. When we post the invoice from MIRO, we create a new asset ( real asset ) and changing with dummy asset which I was used in PO. The system derives when I create real asset in AS01.I want to derive dummy account assignment for AS01. Is there any impact If I made this?

Thank you very much

Best Regards