Does anything in See what’s new in Firefox! help? I just updated to FF 67.0 via the usual method (Firefox > About Firefox > Update) and everything seems to be intact. I did not trash the original installation, but simply updated.
Jon
macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365
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