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Sync did not open tabs from laptop A on laptop B, nor vice versa.

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Two laptops with Firefox, one a new profile, the other a well-used profile. I signed into the new profile first, then the old one on the other laptop. Nothing happened. I expected the new profile to copy the old profile. Fine, it doesn't work, but now when I try to close down the old profile I am warned that all my tabs will close, even after disconnecting the Firefox. That's not fair! Please, any ideas about how I can close Firefox without losing my tabs? Thank you.

Two laptops with Firefox, one a new profile, the other a well-used profile. I signed into the new profile first, then the old one on the other laptop. Nothing happened. I expected the new profile to copy the old profile. Fine, it doesn't work, but now when I try to close down the old profile I am warned that all my tabs will close, even after disconnecting the Firefox. That's not fair! Please, any ideas about how I can close Firefox without losing my tabs? Thank you.

Chosen solution

I think I understand what happened. Sync makes both profiles have the most recent settings and so on my old profile it lost the setting for "when starting up, use tabs from last time". And for tabs, you get to them with the button, not that they appear in the browser.

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Chosen Solution

I think I understand what happened. Sync makes both profiles have the most recent settings and so on my old profile it lost the setting for "when starting up, use tabs from last time". And for tabs, you get to them with the button, not that they appear in the browser.