Canon WFT-E9 Advanced User's Manual page 65

Note
During continuous shooting, images are transferred to the FTP server in the order
they are captured.
The captured images are also stored on the card.
Any images for which transfer is interrupted or fails will be transferred automatically
when the connection is recovered ( ). These images can also be re-transferred in
batch at a later time ( ).
If network settings such as the connected FTP server are changed before FTP auto
retry starts, FTP auto retry will not occur.
65