With my FR220 on Iphone 5 (iOS8.1) :
I add a manual activity (In french)
Type: Natation
Date : The date/time
Durée : 25:00
Distance: 1.0 Km (i have the goog number upside the select wheels)
i do "OK" and then on the activities panel i can see the new one.. except than the distance is set to 100.000m ... 100km in 25 Mn .. I'M THE NEW WORLD CHAMPION !!!!! ;)
i think it's a bug.... so bad for my record...