How to back S Note and Action memo

Hello, I need to send my device to Samsung for checking about those problems I have posted. As far as I recall, Keis does not back up things that I wrote in Action Memo and S Note. Is there a way to do it? My device is not rooted.

Few months ago, some users mentioned that I need to root my device in order to be able to use software that would allow a full backup and recovery. Does it still hold true?

Thanks.