Well neither, really, though both terms come to mind when I describe my process for reworking the panels of my Map. Thanks to modern technology I can scan and reprint a panel without having to erase physically the image or overpaint it in order to revise it.
Shown above is the panel which came up in this morning's draw of the cards. I've applied a grid to guide my collage of one-inch squares that will re-interpret the painted shapes. The original version of this sheet is now preserved in my studio archives.
A few panels have undergone as many as eight revisions. Most panels are in their third or fourth generations.