My sketch disappears when I edit another sketch
Please post your file (.f3d) so we can diagnosis it. Kinda of hard to tell your setup.
John Hackney, Retired
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This is a fundamental aspect of parametric/history-based design. When you edit a sketch or a feature, anything that was created after that sketch is not hidden. The main reason for this is to prevent cyclic dependencies in your design (sketch 1 refers to sketch2, but sketch2 also refers to sketch1). So, you can only refer to objects created before a sketch you are editing. Think of edit sketch and edit feature as time travel. They take you back to the time at which the sketch was first created.
In your case, sketch4 was created after that sketch, so it is rolled back.
Sometimes, you can reorder the sketches or features in the timeline to change history, but that will depend on whether there is any dependency between them. Again, Fusion is trying to prevent you from creating cycles.
Jeff
[edit] corrected a bad mistake in this response. See the strikethrough...
Jeff Strater
Engineering Director
When you say that sketch4 is missing from from V8 and V9, are you sure that it is totally missing, or is it possible that sketch4 is just to the right of the end of design marker, as in your original question? Look at the timeline, does it look like this at all? The end of design marker is shown by the red arrow. If there are features, especially sketches, to the right of the end of design marker, one of them could be sketch4. Worth looking into.
Jeff
Jeff Strater
Engineering Director
