I am using {exp:zoo_visitor:update_form> on a rather large Profile page for members to update their details.
It seems that you can only update one playa field at the time - I have experimented wrapping the {exp:zoo_visitor:update_form> tags around all form entries and each separate but the Playa fields don't update together.
Update: I replaced all Playa fields with the native Relationships field (yikes!) but these fields seem to hold the data. There is also a Matrix field, which doesn't hold the data but after replacing this with the native Grid field it's behaviour maintains.
Surely this is all JS related but I am not able to debug this....
include_jquery="no" has no effect.