All bookmarks and history lost. Have spent over 2 hours following the steps outlined as a standard treatment for this problem, attributed to another program interfering with Firefox Profiles or bookmarks. Restarts of Firefox and PC failed to restore, Going to Bookmarks>Manage Bookmarks fails because when you get to the Library window for Import or Restore and select profile (I show 3 right now, all tagged as .default), there is no way in the window to accomplish a restore. You can insert a profile in the open window but there is no way to activate the restore function. Likewise when I accessed the list of 15 prior bookmark files I had the same result with the restore window. The instructions do not make any sense to me. Need somebody to contact me directly and walk through problem via phone call. Using Firefox version 147.0.1 64-bit Contact Vic at [edited email from community support forum]