CUG 6.7 BASICS Why arent my CASEROOT xml variable changes working - ESMCI/cime GitHub Wiki
It's possible that a formatting error has been introduced in the env xml files. This would lead to problems in setting the env variables. If there appear to be problems with the env variables (i.e. if the model doesn't seem to have consistent values compared to what's set in the xml files), then confirm that the env variables are being set properly. There are a couple of ways to do that. First, run the ccsm_getenv script via
> cd $CASEROOT
> source ./Tools/ccsm_getenv
> env