I've upgraded to v.6.33. The results of the (arcane) command are as follows:
Before upgrade: e72425de3cb77a4ddff9289f728017b4 11 0 0
After upgrade: 6d3d6f860ea36fb537e68306185b8c4d 11 0 0
Thank you for your help. It might be possible to solve this mystery after all.