When this didn't change anything I used the "add rasters to mosaic dataset" tool with the "Overwrite_duplicates" option. During this step I also allowed Arc to set it's own values for generating new Pyramids.
When this didn't change anything I used the "add rasters to mosaic dataset" tool with the "Overwrite_duplicates" option. During this step I also allowed Arc to set it's own values for generating new Pyramids.