If the configuration you are trying to change is available in SAS Environment Manager, you should also be able to update it with the sas-admin CLI's configuration plugin. If you were to update the SAS Configuration Server directly through sas-bootstrap-config, your new value would likely be overwritten by the configuration service where the old value is present.
This blog explains how you could pull down a configuration to a file, modify the file, and push it back to the configuration service:
https://blogs.sas.com/content/sgf/2018/06/08/saving-and-reloading-sas-viya-configuration/I wanted to say all that before addressing the behavior that sas-bootstrap-config did not update a key. For sas-bootstrap-config kv write to work on an existing key, you need to use the --force option. But again in your case you would not want to use sas-bootstrap-config as the parameter is defined through the configuration service, which would overwrite what was written by sas-bootstrap-config.
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Greg Wootton | Principal Systems Technical Support Engineer