It exports the definitions (the pointers) as a image_export.csv (Comma Separated Value) text file.
This file can be edited!
If after exporting your complete list of images from one server, you want to then import just one of those images to another server you edit the original exported .csv . I use Microsoft Excel.
Delete the lines for the images you are not interested in, then save that new .csv .
On the destination server you then import the updated .csv. The contents of which are then merged into that server’s database.
One of the nicer bits about the exported .csv is that the creation date and image size are saved and imported along with all the other pertinent fields. Do not worry about the image ID #, that is not saved or imported.
Of course you will still need to copy the actual image files referenced by the image definition onto the destination server.