If you havent already, I recommend starting with this post:
The post above has a link to a github page that contains OZW 1.4 config files for HA. It might solve both your config parameter issue as well as your scene issue. You may have to exclude/include your devices or refresh node info after making these updates in order to get HA to detect the changes.
If that doesnt work, could you post the relevant section of your zwcfg*.xml file, so we can take a look? If you made changes to it yourself, it could just have a typo. Also, I believe HA only reads this file on startup, and always re-writes it on shutdown. If you manually update your zwcfg*.xml file, you must shut down HA first or any updates will be lost.