The majority of improvements are geared toward developers, not users, according to many experts who have seen the initial versions. With v4.2-v5.8, you can access much of the information, but not modulators, filters, or effects. Best Case: use a version v4.1 or less, giving you complete access.
And if you use Kontakt 6, do not resave those nki's. If you are interested in using Kontakt for authoring, or place some value in taking your information into some other format - such as EXS24, or SFZ, or your keyboard workstation (Motif, Kronos, Kurzweil, etc.), we advise keeping an older version of Kontakt around for creating accessible files. If you try to access those files in Translator, or any Chicken Systems product, you will get an error message. The Kontakt 6 extension will be the same. You can only access/load/use them in Kontakt 6 - nothing else. This means that you will not be able to translate, view, operate on, or audition Kontakt 6 NKI files within any third-party product such as Chicken System's Translator, Kontakt Assistant, or Constructor. 'Files created by the upcoming Kontakt 6 (release Oct 1), due to encryption and new NI policies, will not be accessible by any program other than Kontakt 6 itself. Moving forward, Kontakt is a closed, proprietary system in every sense. This is very bad news coming from Chicken Systems.