Copying my pics from camera to wireless flash

If I copy my iPhone pics from my iPhone to my sandisk wireless flash will it keep all the photo info with it? I’m meaning GPS info, camera settings etc. basically all of the metadata?

Also I have a Panasonic TZ40 which has WiFi built in. Is there any way to send my pics from my TZ40 to the wireless flash direct?

If not can I go from TZ40>iPhone>wireless flash? and again will it hold all the metadata?