It looks like https://launchpad.net/ubuntu/+source/software-properties/0.92.9.1 was deleted from quantal-proposed as well, so software-properties should also be marked Won't Fix in Quantal.
It looks like https:/ /launchpad. net/ubuntu/ +source/ software- properties/ 0.92.9. 1 was deleted from quantal-proposed as well, so software-properties should also be marked Won't Fix in Quantal.