I've noticed some odd behaviors with Forms after adding a few Feature cuts, such as missing geometry in IFC Export and the inability to modify these features.
When generating Features such as cuts, it is best to use a profile that extends well past the outer edge of the Form (or Solid) that is being cut. In the case of the models in question, there were a few feature cuts that were created using profiles whose edges were coincident with the edges of the Form itself, or within a few UORs, resulting in essentially "zero width" faces. This scenario can cause accuracy/precision issues when the underlying Parasolid modeling engine performs it calculations during later post-processes or is used to read data as part of an export command (such as IFC). Since there are an infinite number of possible combinations of cutting profiles and Forms, it is best to avoid this scenario by always leaving sufficient room between the cutting profile edges and the edges of the Form being cut. This can also help in cases where the Feature or the Form/Solid's edge may be modified slightly after the fact, bringing the two even closer together.