Abandon One Fleet from a race

I score the results for 3 fleets on one file, the problem I have is that I need to Abandon one of the fleets in one race. Can this be done?

Mike, you just have to clear the results of the abandoned race of the fleet in question and rescore the series.

Will that prevent this race being used as a discard. Thanks for you advice

The race will be blank and will be not used as a discard. You can leave the race blank for that fleet if the abandoned race is not resailed or populate it if it is resailed.