I have spent the last couple of hours on the phone to UA about this award. unfortunately, I need to buy about 7000 miles to book, so when I got the OK out of the first (and second) agents, i couldn't get a booking - now, when I call back, they say it is invalid...:

BSL-FRA-SIN-CMB return, with a stop in SIN.

this isn't showing up as a route in their system - however, if I drop the BSL and leave from FRA, it soes show up as a valid route.

The last two agents, however, have claimed that FRA-SIN-CMB is over miles allowed - but it seems to be the only way to CMB (except for DE, but I'm ignoring them for the moment).

Object of exercise is to get to CMB and stop in SIN where i can buy a cheap hop to MEL, thereby getting a really cheap pseudo-RTW out of this.