Nikon Z8 User Manual page 776

Copy Image(s)
Copy pictures from one memory card to another when two memory cards are inserted.
Option
[Select source]
[Select picture(s)]
[Select destination folder]
[Copy picture(s)?]
Copying Pictures
1
Choose [Select source].
Highlight [Select source] and press 2 to display the [Select
source] dialog.
2
Select the card containing the pictures to be copied.
Highlight the slot for the card containing the pictures to be
copied and press J to select the highlighted slot and return to
the [Copy image(s)] menu.
Choose the card from which pictures will be copied.
Select pictures to be copied.
Select the destination folder on the remaining card (the card not
selected for [Select source]).
Copy the pictures.
702
G button U D playback menu
Description
Copy Image(s)