I have done my first Bank Import and seen how the process works. I did backup my database first!
I have worked out that I need to use Accounts Receivable and Accounts Payable. I think that this is because I am using Sales Invoices and Purchase Invoices. If you are doing Cash (no invoices) - you need to allocate to the account like advertising, but if you are using a purchase invoice you have already allocated to advertising and you simply need to allocate to accounts payable and supplier. Is this correct?
Everything looks right, but I want to be very clear on this before I end up having to reverse hundreds of transactions.
Ps I could not use CSV - It just wouldn’t work. So I ended up using .ofx.