How do you move a line item in an invoice in QB Self Employed without having to type the whole thing over?

Hello, donniahalexander. 

Welcome to the QuickBooks Community. Moving a line item without having to type it is not possible. We have to manually retyped the whole over.   

In the meantime, you can visit our QuickBooks Blog regularly. From there, you'll be updated with the features and enhancements that our developers are currently working on.

Also, you can visit these articles about some how do I questions in QuickBooks for your future reference:    

• QuickBooks Self-Employed  
• Help articles  

Please know that the Community is always here to help you out to make you and your business easy and functional.