How to prevent cancellation of AP Invoice

Summary:

We are looking for a preventative control such that an AP Invoice cannot be cancel once it is sent to Projects module and transaction is included in contract invoice and transferred to AR and paid.

Content (required):

Invoice A has a line charged to a project code. Charge on invoice A moves to project accounting module. In project accounting module lines are selected to be billed via Contract Management. Invoice is generated, released, transferred, accepted in Account Receivable and subsequently paid. After some time, the original invoice A in Accounts Payable is cancelled. Then credit moves to projects, contracts, AR but cannot be accepted into AR successfully. Is there a control we can enable to prevent such AP invoices from getting cancelled?