"Drop to CAD" Explained

"Drop to CAD" Explained

I have a fairly complex small plastic component part, with a lot of features that are Non-normal (distance between sets of points). I wanted the Points in this format to easily use them as a Cloud.

Our Design Engineer determined these points XYZ coordinates. He exported them to me as a tab delimited text file, but without IJK.

I have imported the Points, and want to drop them to CAD. So this is my question.

What is the Drop to CAD function do to fit my Data to the CAD? And, will the IJK accuracy be good especially on Small Curvature.

I should know this already, but I do not.

Thanks for the education in advance.