Data units is incorrectly infered

Reproduce the issue using the seasonal prediction dataset and inspect the Julia dataset expressions shown for ds[Variable="t2m"] and ds[Variable="v10"]. Trace how variable properties are assigned from the source metadata. Done means each variable retains its own units, long_name, standard_name, and related properties instead of inheriting another variable's values.

I have a seasonal prediction dataset with 16 variables. It seems that thay all inherit the same definition, which is one of the 16 variables.

What we should get:

for ivar in list(ds.keys()):
    print(ivar, ds[ivar].attrs)

rsn {'units': 'kg m**-3', 'long_name': 'Snow density'}
tclw {'units': 'kg m**-2', 'long_name': 'Total column cloud liquid water'}
tciw {'units': 'kg m**-2', 'long_name': 'Total column cloud ice water'}
sd {'units': 'm of water equivalent', 'long_name': 'Snow depth', 'standard_name': 'lwe_thickness_of_surface_snow_amount'}
lsp {'units': 'm', 'long_name': 'Large-scale precipitation', 'standard_name': 'lwe_thickness_of_stratiform_precipitation_amount'}
cp {'units': 'm', 'long_name': 'Convective precipitation', 'standard_name': 'lwe_thickness_of_convective_precipitation_amount'}
sf {'units': 'm of water equivalent', 'long_name': 'Snowfall', 'standard_name': 'lwe_thickness_of_snowfall_amount'}
u10 {'units': 'm s**-1', 'long_name': '10 metre U wind component'}
v10 {'units': 'm s**-1', 'long_name': '10 metre V wind component'}
t2m {'units': 'K', 'long_name': '2 metre temperature'}
d2m {'units': 'K', 'long_name': '2 metre dewpoint temperature'}
tp {'units': 'm', 'long_name': 'Total precipitation'}
fg10 {'units': 'm s**-1', 'long_name': '10 metre wind gust since previous post-processing'}
mx2t24 {'units': 'K', 'long_name': 'Maximum temperature at 2 metres in the last 24 hours'}
mn2t24 {'units': 'K', 'long_name': 'Minimum temperature at 2 metres in the last 24 hours'}
mean2t24 {'units': 'K', 'long_name': 'Mean temperature at 2 metres in the last 24 hours'}

What we get instead:

ds[Variable="t2m"].properties

Dict{String, Any} with 7 entries:
  "missing_value" => -32767
  "units"         => "K"
  "add_offset"    => 279.534
  "long_name"     => "Maximum temperature at 2 metres in the last 24 hours"
  "scale_factor"  => 0.00103738
  "standard_name" => "lwe_thickness_of_snowfall_amount"
  "_FillValue"    => -32767

ds[Variable="v10"].properties

Dict{String, Any} with 7 entries:
  "missing_value" => -32767
  "units"         => "K"
  "add_offset"    => 279.534
  "long_name"     => "Maximum temperature at 2 metres in the last 24 hours"
  "scale_factor"  => 0.00103738
  "standard_name" => "lwe_thickness_of_snowfall_amount"
  "_FillValue"    => -32767