Hi, I have two laptops, and I've been using my Firefox account on one of them only. I want to link / sync the other laptop, and have the combined set of bookmarks from both laptops saved to my account. I want to make sure not to lose existing bookmarks from either one. That is, I don't want the sync to delete existing bookmarks on the laptop which is not yet connected. I want the two sets of bookmarks to be combined into one. How do I do that?

Many thanks, Noam