After uploading bank transactions and recognizing their category, especially for sales received, how to match that transaction with what product/service sold?

For first time user, first we will upload our previous bank transaction, then we categorize the transaction. 

1) Do we need to create new invoices for all previous sales transaction? So that the inventory will be updated too.

2) How to match the uploaded transactions to the invoice? 

My point is, I want the uploaded transactions synchronised with the inventory record, sales report and P&L.