Thank you for your quick response

But I think that my question still stands. According to accrual accounting you earn the money when the service is rendered not when you create the invoice so the P&L should reflect the service date not the invoice date? 

I create the invoice when the customer orders the service and I get paid before the service is rendered so I enter the invoice date on the date that I send out the invoice and I enter the service date to reflect the date the service is provided. I think the P&L should run according to the service date not the invoice date?

I have seen that another person asked that Quickbooks should fix this.