Just updated iOS 10 and cubasis 2 using Viking synth and Ruismaker in audio unit inside cubasis …but did not get preset saving and read and write automation for these audio unit app . I contact their maker they replied me to contact steinberg to merge the desire feture in next update becoze it is very necessary to use with audio unit app
Cubasis supports Apple’s AU preset mechanism, which is limited to loading included presets of an AU app.
However it is not possible to save own presets.
AU automation support is on our list for future updates.
But we can save the preset in GarageBand , and there is no saving of cubasis plugins settings for example I make a studio eq settings but I can not save for the use in another project
To my knowledge presets saved in GB are available in GB only.
Afaik, there is no global way to save presets that way.