Yeah, same for me. I assume that it is a "feature" of Splunk Add-on Builder because it will use template from UI to generate globalConfig.json and <appname>_rh_account.py and not read content of these files. So from my side best option is to edit <appname>_rh_account.py and globalConfg.json and add new fields or edit existing and create a copy of this files somewhere. After each change in add-on builder code editor you need to replace both files. Some kind of option is to change code directly in /bin/input_<inputname>.py and only change versions of app in properties. So there will be no need to use code editor and overwright your changes. Unfortunately when you want to add new parameter to input you will need to prepare manualy new veriosn of globalConfig.json becasue best option will be to add it via add-on builder UI and add you custom modification to it.
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