Know which file or layer changes
WordPress utilities may produce wp-config.php constants, Apache rules or PHP registration code. Each belongs in a different location and can affect the entire site when implemented incorrectly.
Back up and stage every change
Preserve the exact original file, use a staging environment and change one concern at a time. Confirm front-end pages, administration access and permalinks before production deployment.
Generated code still needs ownership
Review names, prefixes, permissions and environment assumptions. Keep generated snippets under version control when possible and revisit them after WordPress, hosting or plugin changes.