Only thing I can see about it in the regulations is this, though not sure if the second paragraph would apply since Victor has been away for some time, I'd assume Victor would be 5th in averages but maybe Edinburgh can choose.
In any declaration where 2 or more riders hold an identical MA (cannot be determined by a 3rd or more decimal point) then the re-declaration must nominate the hierarchical order.
Where riders have a previous MA, then the higher placed rider from the previous issue shall retain the higher position.