I created a model and forgot to include some of the photos. All photos were take with the same drone/camera at the same time. I built the point cloud, dem, and orthomosaic. I want to avoid reprocessing everything. I've added the additional photos as a second chunk and am aligning them. Should I merge the aligned chunks and then reprocess the point cloud, dem and ortho, or can I just process the point cloud for the second chunk then merge everything into one and generate the new dem and ortho or can I even just process the dem and otho for chunk 2 and then merge everything together?