After a Windows 8.1 Update and a cleanup with CCleaner, all of my Firefox history disappeared. I opened places.sqlite the history table was cleared. I really don't understand how that happened but for purposes now that's not relevant. I looked in the bookmarkbackups folder and got yesterday's backup, but that file only has bookmarks, no history. Up until last night I was heavily using Android Firefox Beta with Firefox Sync. I know the history was on the server. I disabled Sync from my PC, hoping to prevent it from uploading instructions to delete all of the history that is there, but I'm sure I did that too late - the Android app now shows the same history as the PC. Is there any backup of this in Sync that we can recover? Thanks