Ahmed,,, I'm thinking the problem may be with the hole wizard holes, assuming that is what you are using and you are not using it between an unfold and fold. You might try offsetting the surface (of the inner sweep and place the HW holes on that surface. I have used this before and it does work well. Note the offset surface where the holes begin. There does seem to be an issue with placing the HW holes on a curved sheet metal surface. Don't know why that is. I'm also assuming you are using the sheet metal swept flange feature.
Edit:... I wanted to add that if you upload your test part we can help you figure this out much better.