PO return case for 'Capitalize Fixed Assets Upon Purchase Receipt to Expense'

Hi Experts,

We're using the process 'Capitalize Fixed Assets Upon Purchase Receipt to Expense Destination'. and after PO receipt, the receipt information transferred into FA and become fixed asset.

After couple of days later, user decide to return the PO for some reason. but the PO return transaction doesn't send a negative source line to FA. why there is no negative source line sent to FA when PO return?

Regards,
Yuan