I was able to work around it by selecting edit and copying out portions of the Note into a notepad until I had the final complete note that I then saved into text file. I was then able to copy the text from the file and paste it into version 6. All I can say, darn good thing I had backups.
BTW, version 6 does not have a right click menu in a note to even copy, select all, etc. If I need to copy a port of the document I can still select what I want and press ctrl+c. Version 6 also does not seem to have the 255 line limitation. I have to edit the note in order to using select the document using the mouse and scrolling, ctrl+c, then paste will give me the whole note. Selecting with the mouse and scrolling does not work unless you edit the document. This is with the Linux version. Not sure if the Windows version has this same behavior or not.