Master/details and window deatils modal problem

Hello,
I have to use this scenario, because I haven’t found any other solution. Exists one?
This attached is the simplified Edit page of the contact but with subpages you cannot generate it.

  1. How do I enable page reloading after editing a detail (obviously on the same contacts.id)? It should reload only the edited table not the whole page.
  2. Is it possible to delete the two buttons A and B, and save the two forms F1 and F2 with a single button B0?
  3. You did not answer me about the problem that the modal window opens and closes immediately when you click on the “Add New …” buttons of the two tables.

Thanks.