I have tried with
Mary Poppins: Special Collection UPC 011846003564
Mary Poppins: Special Edition UPC 717418012700 (released 13.01.2005)
What may be of interest is that after browsing through the forum I came across the idea of splitting the film with the chapter selector. This has enabled me to copy chapters 21 to 25 succesfully. I will now try with a split in the middle. This is for me optimal as the full movie is to long for the kids and the original can stay safe from their scratchy fingers.