If you've manually generated each recipient, these recipients are stored in the NSQ file. However, there is no tool to export the recipient information from the NSQ file. You will need to do it manually.
If you wish to automate the recipient import process, here is some key information as to how to do this.
There is a video demo of this process also within the NPrinting Basic Training Video as well
NPrinting Training Material at the 1h19min30sec mark.
what kind of list are you needing to make and how will it be used?
One option you can do is pull up the recipient list in the nsq, highlight all of the rows and columns for the recipients you want to export, ctrl-C (to copy), open Excel and select the first 2 cilomns and paste - see below
recipients in nprinting
recipienst copied to excel