Personally, I never leave anything out of my log, good, bad or ugly.
Try to estimate the portions as best you can. If the restaurant has nutrish info, use it. If not, find the closest thing you can to what you ate. Really, even a WAG is far better than simply "forgetting" about it.
Just MHO. The closer to the "truth" your FitDay log is, the more effective a tool it is to help reach your goals.
47 M 5'8"
May 4, 2010...... 440? lbs. (Start FitDay Size 60 Jeans)
June 19, 2010.... 393 lbs. (First Weigh-in)
June 19, 2011.... 229 lbs. (164 lbs. gone in one year :-)
Current Weight... 185 lbs. (Size 36 Jeans)
Next Goal 169 lbs. (07/04/12)
Ultimate Goal 165 lbs. (12/31/12)
The best exercises for weight loss are Fork Putdowns and Table Pushaways.