Can we run CMS 12 and CMS 13 sites in the same opti graph instance?

Vote:
 

Is that possible? since the schema is so different? 

it is two different sites and page types

#342754
Jun 12, 2026 8:42
Vote:
 

Based on the CMS 13 migration docs I would be careful with this setup.

CMS 13 introduces breaking changes in the Graph schema compared to CMS 12 and the documented migration path seems to create a separate CMS 13 project / Graph instance rather than reusing the CMS 12 one

#342771
Jun 12, 2026 11:29
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