Forums / Cotonti / General / Sienna plugins

If you enable Genoa compatibility plugin most Genoa plugins should work fine in Siena.

I suspect most plugins will not be converted at all, since that can be quite a bit of work and most plugin authors dont have time to fix their old plugins for Siena.

Siena should be used for new sites, it's not just for testing. Migrating from Genoa is a bit of work, but that's true for any major upgrade.