I am familiarizing myself with GIMP using an online tutorial. The tutorial showed me how to use the selection editor to save my selection to a channel (using the button I circled in red). Then, after deselecting all, I was able to replace my current selection with the previously created channel (button circled in green).
Once I restore the selection in this way, I'm unable to do some of the same operations I could do when I made the selection initially. For instance, I'm unable to hit Ctrl+X to cut out the red portion of the image. Clicking back inside the image does not put things back to normal, and neither does hitting the escape key. Is there something I need to do so that I can edit my selection as usual?
If I deselect all and manually create a new selection after following the steps listed above, I still can't perform the usual edits.