@Capt. Henry Morgan, I wrote it was reverted, and so it should be reverted. Please at least check it yourself rather than pass on second hand information. Now I have spent my time re-checking it and replying to you and it is still exactly where I left it when I reverted the changes.
I apologise for leaving everyone hanging. The bases listed will be temporarily made invulnerable and without maintenance again, until an implementation is sorted out that allows them to receive appropriate damage and upgrade like normal bases. When that's done, someone will post here again giving a week's notice of the coming vulnerability.