fatal error: frame selection and frame changes don’t mix

[CairnThePerson]

The manual provides this example under the Frame Change Options section:

gifsicle a.gif --delete "#0" --replace "#2" b.gif

When I try the equivalent using my own GIFs, I get an error saying frame selection and frame changes don’t mix. Is it not possible to mix frame change options? If so, then the manual probably needs updating, but if not, then there seems to be a bug.