How to modify DEM without losing ORTOPHOTO corrections

[aerofotocol]

Hi Group, Im doing a very large survey dataset and I try to correct (point cloud classification) as many defects on the DTM before building the ORTOPHOTO, but it happend to me that after hundreds of patchs in the ortophoto I found a couple of errors in the DTM and I have to go back to fix them but when I update the DTM, I have to build again from zero the ortophoto and lose all the patchs.

Is there a way to modify the point cloud classification, Update the DTM and Update the Ortophoto without losing the patches applied to the Ortophoto?

Thanks,