Need confirmation box before leaving unsaved transaction screen

[aungzwin10]

Scenario Entering multiple transaction lines in AR/AP > Transaction/Invoice or GL > Journal Entry, before saving(just in update state), user unintentionally click some link from menu or button that leads to another screen, all the data that he/she previously entered are lost since it is not saved yet.

Request I'd like to add confirmation alert box before leaving these screen with message like "There is unsaved data. Do you want to discard?"and two button "Proceed" "Cancel". If there is no unsaved data in the page, the alert box do not need to pop up.

[ehuelsmann]

This is mitigated now that the back button works again in 1.9.