I use a quick file transfer on my A3 to download Files from the SD card in the drone to my mobile device. Is it safe to then delete the files from the SD card? I have several cards but I am here in Exuma taking a lot of video and filling up my cards quickly. Low resolution files, cache, raw, and all this other stuff is new and confusing to me. I still have a lot to learn, but I don’t want to lose files that may later need to make good video when I learn how to use editing software.