Differences on importing recipes

OK, weird question....has anyone else imported a recipe only to find that it's not the same as is was on the original website? Example, I just uploaded a recipe for Lemon and Dill Chicken, on eating well, it lists:Per serving: 170 calories; 6 g fat(1 g sat); 0 g fiber; 3 g carbohydrates; 24 g protein; 12 mcg folate; 63 mg cholesterol; 1 g sugars; 0 g added sugars; 28 IU vitamin A; 3 mg vitamin C; 19 mg calcium; 1 mg iron; 339 mg sodium; 272 mg potassium , but when I imported it in MFP it was like 586 calories and more fat......Just curious, Thought it might have been a good recipe for only 176 calories, but if it's 576, then I might have to pass....