Because you are creating assembly features, they are only in the assembly file and the assembly drawing. If you make a drawing of the component part, it will not have the assembly features. As far as I know, you cannot move a feature from an assembly to a part. You can always put the feature in the part and dimension it there with the default values and then once you have it in the assembly modify the dims to position the feature where you want it. If the feature is dependent on features in another part that is in the same assembly, you can leave the sketch underdefined and use relations to define it in context.