Subject: Add a supplier's invoice from projects->referrers - by: eleron

Hello i belive that i make something wrong can somebody tell me why i can't make a supplier invoice for a project??? first i can't see this option in projects->referrers but i can see the customer invoice.\ second if the project is attach to one customer i can't make a supplier invoice for this project also from the supplier page because the project is not on his name... so what i make wrong?? or missing???