Thank you for your response and your efforts, we can clearly see that you want to adjust boundaries to a current condition. We already fixed issues with broken boundaries.
Probably the best tool when working with dounbaries would be JOSM software (https://josm.openstreetmap.de/wiki/Download), where you can clearly see on a larger scale if the boundary is broken. Here you can find helpful link for editing relations (https://wiki.openstreetmap.org/wiki/Relation)
If you have any further questions feel free to ask for help.
Best regards
Aleksandar