Modification in MIRO after EHP 6

Hello experts.

I'm have a small trouble in transtion MIRO after implementation of EHP 6.

Before when us accessed the screen of multiple account assignment we had in this screen the buttons for select or unselect all itens, but now this buttons disappeared from the screen.

What I need is this buttons to select or unselect all lines of multiple account screen.

Anyone know how i can put this buttons there again?

Thanks and best regards.