After reading some posts on RCgroups, I discovered that it is possible to copy memory models from the XG8 to the XG11 by using the SD card. I did the exercice and can confirm that it works great. See the screen below just after the completion of the copy from the XG8 SD Card to an internal memory of the XG11. This is certainly due to the structure of the menu which is very similar and also a proper syntax into the model memory file. Apparently this is also possible from the small sister XG6 to the XG11. Well done !