What I, and many other posters are requesting is a report that lists invoices for a customizable time period and includes in the same line the date the invoice was created and the date it was paid.  I would like to run it simply as a list and not grouped by customer.  

Despite the fact that there must be a join between an invoice create date and the invoice paid date, that the report is not available.  In order to get the information a user has to click multiple links to get the paid date.  A report based on invoices, customizable by date and even client that includes create date and paid date is what users want based on multiple requests found in this community.