Thank you Ben you are correct.
I had no idea that the "Maintain synchronization information" located under Site > Servers >Edit > Advanced Tab also created the _notes folder.
My question to Adobe is why this option is *checked* after I updated to DW CC 2015 ? I have not had this _notes problem with any of the other DW CC updates - Win8.1 64bit.
FYI: It appears that the "Maintain synchronization information" is checked by default when you setup a new server.
Something is definitely wrong with this installation of DWCC2015 . I have "Maintain Design notes" and Maintain synchronization information both unchecked. When I put a file I get the dialog that synchronization information can't be found and I say yes to the question do you wish to put the file anyways. This appears to create the _notes folder.
FYI: It appears that after I put a file, when I look at "Maintain synchronization information" it *is* checked !
How do I stop this behavior ?
I have deleted the SFTP server information in DW. Finally I am not seeing the _notes folders.
Please let me know if you ever fix this.
I will use another file transfer software to publish files.