Same issue as everyone else. The mistake also synced over to my iPhone and my Mac. This happened on Windows version 10.0.14393 with Evernote version 6.3.3.3502. Working with a table. Cut and pasted three rows. Evernote overwrote my top 18 rows. so I lost a bit of work. Have done undo repeatedly, it seems to bounce between a couple different sets like all the history previous to the cut/paste was erased. Simple edits going forward, no problem, undo's just fine. Someone suggested simplify/remove formatting - not helpful. Yes, am using a premium account.