It might be useful to know a bit more about your need. Is it that the server has received some data from somewhere and it realizes that the user's screen needs to be updated to show the new data ? What is your situation ? /Eric
The intial link or button which is clicked to launch the modal diaog, in that configure first event as opening Local action in a modal dialog.
and 2nd event as refresh other sections ( which is the main section including your rest of the 5 sectiosn which need refresh).
I feel it will be triggering in order that is first Modal dialog will be launched and later when modal dialog is closed, the refresh of those other section will be triggered. (but yes irrespective of save and cancel of modal dialog).
Other way could be to customize the template used for the modal dialog. and configure the Submit button in the template as per the need.