I am looking to combine two single-band, 1-bit rasters of the same spatial extent based on their relationship to a polygon (mask). The image shows a polygon displayed with a cross-hatch and the two input rasters (Raster 1 & Raster 2) as well as the desired output raster (Raster 3). I need to keep the Raster 2 cells that are covered by the polygon mask otherwise keep the Raster 1 cells. This seems like it could be accomplished using Con or map algebra with a mask, although I have not been able to find a solution. How can I combine two input rasters based on their relationship to a polygon (or mask)?