capture>edit>copy>AUTO SAVE IT IN GREENSHOT FOLDER
There is an option in greenshot to auto save all captures in the greenshot folder.
Such a good feature, I don't have to think about saving everytime or wondering if I need it.
But when you EDIT a capture, and then click the COPY button inside Greenshot, it does NOT save it to the greenshot folder.
I feel if you have the "auto save to greenshot" feature on, then any COPY inside greenshot should save it to this folder.