Adams v. Gunter
Florida Supreme Court. In it, the court struck down as unconstitutional an initiative that would have amended the Florida Constitution to change the Florida State Legislature to a unicameral form of legislature. The court's grounds for its decision was that the initiative was a "revision" to the constitution, and was thus too far-reaching and transformative to be enacted as a mere amendment to the constitution.
The Adams decision has been cited in some of the legal filings regarding California Proposition 8 (2008) as supportive of the idea that Proposition 8 is a revision, not an amendment.