Ok after a bit of digging & taking some advice this is what I think.
This is not professional advice as I can not confirm at this time so use at your own risk.
The type approved unit has the same type approval as a standard 50mm ball ( A50-X).
So should be approved for use with any bar approved for use with an A50-x approved attachment ie all of them.
That then leaves the others that are not approved as unsuitable still.
Do with this what you will, just remember it is not my professional advice so dont sue me.
If you want advice you can take to the bank I can chase this further but at this difficult time it might take longer than usual to get a reply.
This is not professional advice as I can not confirm at this time so use at your own risk.
The type approved unit has the same type approval as a standard 50mm ball ( A50-X).
So should be approved for use with any bar approved for use with an A50-x approved attachment ie all of them.
That then leaves the others that are not approved as unsuitable still.
Do with this what you will, just remember it is not my professional advice so dont sue me.
If you want advice you can take to the bank I can chase this further but at this difficult time it might take longer than usual to get a reply.