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migrate firefox settings etc to new computer

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Trying to migrate firefox setting from XP with fire fox 39 to windows 7 with fox 43. Sync will not work tryed coping profile can not get it to work

All help is appreciated .

Trying to migrate firefox setting from XP with fire fox 39 to windows 7 with fox 43. Sync will not work tryed coping profile can not get it to work All help is appreciated .

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