Differences between AGCM.rc.tmpl in 5_27_1 @GEOSgcm_App version and in the latest version of @GEOSgcm_App

Proactive note to remember an issue needed to be addressed as we move the model version forward from the initial 5_27_1 version.
There are inconsistencies between the version of the @GEOSgcm_App repo in initial 5_27_1 GEOSadas tag on git vs the latest version of the @GEOSgcm_App.
For example in the 5_27_1 tag AGMC.rc.tmpl has this for the ocean grid specification:

>>>COUPLED<<<      OGCM_NX: @OGCM_NX
>>>COUPLED<<<      OGCM_NY: @OGCM_NY
      OGCM_IM: @OGCM_IM
      OGCM_JM: @OGCM_JM
      OGCM_LM: @OGCM_LM
OGCM_GRIDNAME: @OGCM_GRIDNAME

      OGCM.GRID_TYPE: @OGCM_GRID_TYPE
      OGCM.GRIDNAME: @OGCM_GRIDNAME
      OGCM.IM_WORLD: @OGCM_IM
      OGCM.JM_WORLD: @OGCM_JM
      OGCM.LM: @OGCM_LM

      OGCM.POLE: 'PE'
      OGCM.DATELINE: 'DE'
      OGCM.NF: @OGCM_NF

>>>COUPLED<<<OGCM_GRIDSPEC: @OGCM_GRIDSPEC

whereas in the latest version of @GEOSgcm_App AGCM.rc.tmpl looks like this:

# Ocean Model Configuration Parameters
# ------------------------------------
      OGCM.GRID_TYPE: @OGCM_GRID_TYPE
      OGCM.GRIDNAME: @OGCM_GRIDNAME
      OGCM.IM_WORLD: @OGCM_IM
      OGCM.JM_WORLD: @OGCM_JM
      OGCM.LM: @OGCM_LM
      >>>COUPLED<<<OGCM.NX: @OGCM_NX
      >>>COUPLED<<<OGCM.NY: @OGCM_NY
      >>>COUPLED<<<OGCM.GRIDSPEC: MAPL_Tripolar.nc

      >>>DATAOCEAN<<<>>>LATLON_OGCM<<<OGCM.POLE: 'PE'
      >>>DATAOCEAN<<<>>>LATLON_OGCM<<<OGCM.DATELINE: 'DE'
      >>>DATAOCEAN<<<>>>CUBE_OGCM<<<OGCM.NF: @OGCM_NF

In particular the DATAOCEAN chevron stuff causes these not to be evaluated causing the model to fail.