One would have to pay Delaware for the preferred conversion/voting rights to find out how that will work the way things are written right now, but that doesn't mean they won't approve a change based on their needs. I can actually see a transfer of 1 preferred of SKTO for 1 preferred of Medical Greens.
One thing is for sure, they won't do anything that will affect their vote control.
That sort of info. about the preferred shares should be attached to the Articles of Incorporation, however it might not be able to be purchased like Nevada is. If the "details of the preferred" aren't made public, all an investor can see in Nevada is preferred share designations, the "details" can't even be purchased as it says "no notes for this action" when it comes to designations.