We have an application where we have a main document (company) a response (contact) and a second response (activity). From a view, the user selects a contact and creates and saves an activity. In 8.2 this behaves as expected - the activity is created as a response to the main document (the company); in 8.5 the activity is created as a response to the contact (also a response) i.e. it is behaving like a ‘response to response’.
This was apparently also the case in 8.0 and fixed in 8.1???
See here: