I added 6 images together using the combine images option. After editing 5 of them (20 minutes of work) I realized that image #6 was the wrong one. Snagit didn't provide any way for me to add the missing image. We should be able to simply right click on the background while in the Combine Images window then select "Library" then import an image from there onto the work space. That would have saved me 20 minutes of work.