I have a following scenario. First user comes to the view with a list of conversations, which is being saved as cached view. Then he enters a view with the details of one specific conversation. From this detail view I’d like to make some changes to the already cached conversations view. How should I do it?
If you’re making changes to the “list” (the cached view), then it’s not really cached, is it? 
I don’t mean to be facetious, but if you want to update a views data, then you shouldn’t be caching it.
Caching is being done automatically. That’s the problem.
You can disable caching on specific views.
http://ionicframework.com/docs/api/directive/ionNavView/
Scroll down to “Caching”