Hi, thank you for reaching out!

I can confirm that all deletions made in the changeset you've reviewed were intentional and carefully executed following the official MLIT PLATEAU import guidelines provided here:
https://wiki.openstreetmap.org/wiki/JA:MLIT_PLATEAU/imports_outline

According to these guidelines, certain existing data without primary map features may require deletion to accurately reflect updated, authoritative data from PLATEAU. I have thoroughly verified each deletion to ensure compliance and correctness.

If you have any further questions or concerns, please don't hesitate to let me know.

Thank you for your diligence and support!