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Sync on Chrome has always worked for me, but I have used either overwrite server data (when I add new groups or dials) or overwrite computer data (when my computer data has become corrupted). Today, for the first time, I hit the "Merge" button. Sync started and has been running for over 5 min. It also will not let let cancel the sync process, or just log out to break the sync process. I am stuck in a perpetual sync mode.