In hydrus, I have it set to automatically import tags into the PTR when I download images from websites. Most of these tags that are imported are correct but sometimes they're wrong. If someone else sees these incorrect tags and removes them, will I ever get those changes, or does it work kinda like tag parents and siblings where, because I (technically, though it was automatic) added those tags, changes to them by other users will be ignored and I won't sync those changes.
I have tag-importing on because I think that overall it does much more good than harm, but if I have to individually correct every misapplied tag, that probably swings the balance in favor of it not being worth the effort for me.