Discard profile

Could someone please check my sanity. The Sailwave dialogue box tells me that a discard profile of 0,0,0,1,1 will give me 1 discard when 4 or more races have been sailed in a 5 race series. I'm setting up with 7 boats.

If a boat has a result for 5 races, 1 discard is applied fine but if only 4 races are sailed, no discard is applied. Am I missing something. I'm using v2.8.5 on Windows 7 64bit

Thanks for any advice.

Please ignore my message about discard profiles