While the calculator may not have been updated, the earn tables for QFF have for eastern Australia to/from Sri Lanka
In order of Disc Y. Y. Flex Y, Premium Y, Business, First
Points 1,100 2,250 4,500 4,950 5,600 6,750
Status Credits 15 15 30 30 60 90
On UL to Australia
Fare classes BHP are Y, Y is Flex Y the remainder of the cabin is discount Y.
Fare classes CDIJ are business.
So the I class fares would be "sort of" reasonable.....
Happy wandering
Fred