If it was a poorly phrased performance question ... you need to increase TOW value used as data entry for perf calculation when flying with CDL item
E.g. for flap track fairing the CDL says: Takeoff and approach climb limiting weights are reduced by 1180 kg.
To obtain correct performance figures for TOW of 60t pilot will increase this to 61180 kgs and then calculate using either tables or computer tool.
The true TKOF weight is of course still 60t or exactly speaking 60t minus the mass of the missing flap track.
Yours,
FD (the un-real)