Create a section. Open the 2D view, and create some measurements, add some notes etc... in this 2D view.
Save the section as an annotation : the box "include section" is checked. When I open later on this annotation, the section is here, the cut plane and its position are kept, the 2D view is here but all markeusp (measurements, notes etc.. ) made in 2D view are lots. If i took some measurements int his 2D, With the cut plane at this position it is because this measurement is important to see or may be critical froma design point of view. Annotation is an ecellent way of sharing between collegues but in this case lots of relevant data are lost.
This fucntionality is very importabnt for our daily activity :designer, fgeometrical architects, after markets etc.. are requiring markups to be kepts in d view.