Update modules/configuring/proc-provisioning-your-custom-configuration.adoc

Author: themr0c

modules/configuring/proc-provisioning-your-custom-configuration.adoc

@@ -22,6 +22,7 @@ It contains one secret per line in `KEY=value` form.
 This is the main {product-short} configuration file.
 
 ** To prepare a deployment with the {product} Operator on OpenShift, you can start with an empty file.
+Creating a custom file, even an empty one, is required to avoid the {product} Operator to revert user edits during upgrades.
 
 ** To prepare a deployment with the {product} Helm chart, or on Kubernetes, add the `baseUrl` field in your `{my-app-config-file}` file to ensure proper functionality of {product-short}.
 Specify the `baseUrl` in both the `app` and `backend` sections to avoid errors during initialization.