@TeamYouTube My channel is about to clock 4,000 watch hours. What does "Previous 12 months" mean? Will my watch hours become 0 again after 12 months ? What kind of policy is this? All my hard work washed away?pic.twitter.com/4nM1jAFzCJ
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Your watch hours won't become zero, so long as you continue to upload videos. Once your channel meets the eligibility, it will be reviewed for monetization. More info about the YPP checklist: https://yt.be/help/sjjY – also this Community post should help: https://yt.be/help/YPP-review