I guest we all have had a situation where we needed to update the parent page from a SubPage. Without some funky workaround, this was simply not possible. Well, good news in NAV2015…
Since NAV 2015 we have a cool new feature called UpdatePropagation. On a parent page, we set the property UpdatePropagation on a part. Default is SubPart. Which means the part will not update the parent. When we change this to Both the SubPage will be able to trigger an update on the parent, without letting the user press F5 or the refresh button.