richard8466 images have been transferred and deleted using a Mac.
The next time you mount the microSD card on macOS, take a look at the Trash to see of those deleted files have been expunged (called "Empty Trash" on the macOS user interface).
Once deleted, those files are not longer visible by ASIAIR. However, until they are expunged, they still occupy disk space (just so that users can "undelete" the files).
https://support.apple.com/guide/mac-help/delete-files-and-folders-on-mac-mchlp1093/mac
Chen