I have a part with two configurations. In one configuration a slot is sized for a #10 screw and in the other the slot is for a 1/4" screw. My drawing for the part has a sectional view, with the section line coincident with the axis of the slot. The drawing has a sheet for each of the two configurations. I created the first sheet (for the #10 screw), then did a Copy/Paste to make the second sheet. Then I edited the views on the second sheet to show the 1/4" screw configuration. When I do this, however, the centerlines for the two slot arcs disappear. They cannot be redrawn with the centerline tool.
If I do things the other way around, with creating the 1/4" slot drawing first, the same problem happens when I try to make a sheet for the #10 slot. Is this a program bug or am I doing something wrong?