I assumed you meant S-Notes, sorry.
I think Kies may no longer work with Lollipop, or the S6, or both. I have a Note 3 on KitKat.
I can't say why Kies/ Smart Switch won't restore any apps, though it doesn't surprise me too much. It was never a one stop shop to cover and restore everything, and seemed limited to linking devices within one generation of each other.
Have you backed up with Google as well and let it re-populate. App syncing would be on by default.
I would ask the Vnote developer for advice via the Play Store as to where they might be saved.
App backups don't always cover app data, as I understand it, except if you use Helium, or Titanium via rooting, though I think Helium app backups have had issues recently as well.
Sorry I can't advise more.
If you don't get better responses, you can ask again in Android Central Community - General Help and How To, and Introductions.
Try Samsung support as well.
06-02-2015 12:34 PM