--> it seems that in case of export via the Familysite, the correct command " 2 _PERSONALPHOTO Y" is being generated, whcih is correctly interpreted by Geneanet; however, the file is not correctly generated for all records... :-(
Photos are not always exported with a GEDCOM file. Please note that a GEDCOM file is a text-only file.
There are links for photos, but those only normally work when you transferring the GEDCOM within a same company's platform. For example, if you transfer a GEDCOM from one family site on MyHeritage to another, or from our software Family Tree Builder to the MyHeritage family site and vice-versa.
However, if you are transferring (both importing and exporting) photos from MyHeritage to another company (Ancestry, Geneanet, etc.) or bringing a file from one of those sites, the photos might not transfer since each company won't have login access to the other company's system and make the linkage of the photos.
I hope this could clarify your enquiry. Should you have any further questions, you are welcomed to contact us directly at our Support Team on firstname.lastname@example.org.