Citation, Documentation of Sources

Q. CMOS says that in a short-form title (in an endnote or footnote) the order of words should not be changed. But is it acceptable to change the words in any way while maintaining the basic order? Specifically, for the complete title Address Delivered before the Members of the Suffolk Bar, at Their Anniversary, on the 4th September, 1821, at Boston, could the short form be Address to the Suffolk Bar?

A. It would be safer to elide the title: Address . . . Suffolk Bar.