Update 0.1.9.md

documentation/docs/changelog/0.1.9.md

@@ -32,3 +32,16 @@ Not yet released.
 OpenCLI now has a new command `opencli faq` to display most frequently asked questions:
 
 ![opencli faq command output](https://i.postimg.cc/k5k7VkQX/image.png)
+
+
+## `/etc/openpanel/`
+
+To enable easier updates in the future, we are gradually migrating all configuration files from `/usr/local/panel/` & `/usr/local/admin/` directories to the new `/etc/openpanel/` directory.
+
+This will separate configuration files  in /etc/ from all the code in /usr/ and therefore no configuration files will need to be moved&restored when performing updates.
+
+Current changes include:
+
+- Forbidden usernames file is now moved from: `/usr/local/admin/scripts/helpers/forbidden_usernames.txt` to `/etc/openpanel/openadmin/config/forbidden_usernames.txt`
+- FTP configuration files are stored under `/etc/openpanel/ftp/users/`
+-