Sometimes we need to adjust using different versions of the datum, eg NZGD2000_20160701. However does not work with projection bearings defined in terms of a projection such as EDENTM2000, as SNAP requires projection and datum are based on the same datum. So as EDENTM2000 is based on NZGD2000, it doesn't work with NZGD2000_20160701, or even with the current version of NZGD2000 expressed with the version (eg it doesn't work with NZGD2000_20180701 even if this an alias for NZGD2000)
Sometimes we need to adjust using different versions of the datum, eg NZGD2000_20160701. However does not work with projection bearings defined in terms of a projection such as EDENTM2000, as SNAP requires projection and datum are based on the same datum. So as EDENTM2000 is based on NZGD2000, it doesn't work with NZGD2000_20160701, or even with the current version of NZGD2000 expressed with the version (eg it doesn't work with NZGD2000_20180701 even if this an alias for NZGD2000)