Is there any possible way to implement the v2.3 features of wysiwyg extrafields that can be translated with joomfish in v2.2 by editing the plugins?Maybe by selectively upgrading some files?I am gona try and alter the k2 v2.2 plugin if not possible.
EDIT1. K2 v2.3 at the current state doesn't support editing k2 extra fields with editor inside joomfish:(
EDIT2. Finally made it with k2 v2.2 ...had to bypass the native k2 solution of inseting the extra fields in Joomfish but at least now things work properly

I wana thank the team here also for the wonderful extension!

is there a way to give some direction how you did this? there are others having this problem and we cant find a solution to this?

Yes it would be nice if you could give some direction on this. A lot of people are having the same problem.