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firefox 40 beta 7 can't sync

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I did a clean os x el capitan install and can't sync my old firefox 40 beta 6 data. I can sync with firefox mobile. Is this a bug?

I did a clean os x el capitan install and can't sync my old firefox 40 beta 6 data. I can sync with firefox mobile. Is this a bug?

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This may be a bug you can report it here