You had your TikTok keyword filter configured, then one day it was empty. Your entries vanished. This is a known sync bug.

TikTok's keyword filter entries are stored on TikTok's servers but synced through the app. App updates, account migrations, and server-side changes can cause the filter list to reset to empty. This is not user error — it is a platform-side sync issue that has been reported by many creators and brands.
When TikTok pushes a major app update, the local filter cache may be overwritten. If the server-side sync fails during the update, entries are lost. This is the most common trigger.
Switching from a personal to a business account (or vice versa) can reset comment filter settings. The settings migration does not always carry over keyword lists.
TikTok's settings sync is not perfectly reliable. Intermittent sync failures can cause the server-side copy of your keyword list to overwrite the local copy with an empty list — or vice versa.
You are maintaining a keyword list that the platform itself can lose at any time. Even if TikTok fixes the sync bug, the fundamental problem remains: a keyword list that requires manual maintenance, has no backup system, and cannot catch the patterns that matter most (coded language, emoji attacks, evolving slang).
Yes. Many creators and brands have reported keyword filter entries disappearing after app updates. TikTok has not officially acknowledged the bug or provided a timeline for a fix.
Not reliably. The best workaround is to keep a backup of your keyword list externally and check your settings after every app update. The permanent fix is to move to an API-based moderation tool that stores rules independently of TikTok's settings.
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