My misstake
This is the correct way to import schedules:
code,flightnum,depicao,arricao,route,aircraft,distance,deptime,arrtime,flighttime,notes,price,flighttype,daysofweek
WIF,122,ENBL,ENGM,,LN-WIA,,0633,0730,,,,P,12345
Days of week:
1=Monday
2=Tuesday
3=Wednesday
4=Thursday
5=Friday
6=Saturday
0=Sunday
Flighttype:
P=Pax
C=Cargo
H=Charter