note on inflation, allow_missining_in_clm, and groups

This is note about missing values.
allow_missing_in_clm is in the inflation handle.

filter:

1649 do j = 1, ens_handle%my_num_vars
1650      call inflate_ens(inflate, ens_handle%copies(grp_bot:grp_top, j), &
1651      ens_handle%copies(ENS_MEAN_COPY, j), ens_handle%copies(inflate_copy, j), 0.0_r8, &
1652       ens_handle%copies(SPARE_PRIOR_SPREAD, j), ens_handle%copies(ENS_SD_COPY, j)) 
1653 end do 

inflate_ens:

532 ! it's possible to have MISSING_R8s in the state vector now.  
533 ! so we need to be able to avoid changing MISSING_R8 values by inflation here.
534 if (inflate_handle%allow_missing_in_clm) then
535   if (any(ens == MISSING_R8)) return
endif

So if some groups have missing values, but some don't, you will apply inflation to some groups but not others.

Start at the inflate_ens entry point and the shown filter loop, then trace how inflate_handle%allow_missing_in_clm is applied to ens_handle groups. Determine the intended behavior when missing values occur in only some groups, and verify that inflation handling is consistent across those groups.