NZ New Tax Portal - IR10s

[Tracy2020]

Just started using the new online tax return system and am feeling a little stupid as I can't seem to find a way to move from the IR10 input back to the actual tax return.  There is nothing to tell me how to get back to where I want to be. There are no Ok or Close buttons that I can readily find.

I've looked at the videos and at this time can't find anything to assist me.  Does anyone know how to move between the IR attachments and the tax return without going right back to the very beginning and picking up the tax return again?

[JJK007]

When you open the IR10 it opens in a new window (in the image the tab on the right), if you go back to the Tax Return window (in the image the tab on the left) the data should be there