Igor, that article says its possible, but I am sure no one at Plesk has tried it. When we receive the SSL cert from the issuing authority they come as a zipped file with 4 attachments in it, of which one is the .crt file the other 3 files are called the .ca-crt files or the CA Bundle, no where on which panel do you have th facility to add all the 3 files required, even after opening these files via a text editor and copy pasting the codes into the boxes provided in the panel, it still doesnt work, which leave me with the option to only upload one of the 3 CA bundle files....
So how do i proceed????