You want to use Philips DSDIFF instead of DSDIFF Edit Master, as this will split the album into one file per track, instead of a single track.
AFAIK, some SACD ISO files do have DST, so you also want to enable the "Convert DST to DSD" option. DST is a compressed format, which cannot be tagged. You do not need an extra step for this, just convert straight from ISO to DFF with that option enabled.