Migrating from MetaModels 2.0 to 2.1

Migrating from MetaModels 2.0 (Contao 3.5) to MetaModels 2.1 (Contao 4.4) follows the same migration path as the general upgrade from Contao 3 to Contao 4.

There are various approaches — one of them is:

• Update Contao 3.5 with MM 2.0 — update all other extensions as well

• Install Contao 4 from scratch

• Install all extensions that have a Contao 4 bundle via the Contao Manager or directly via Composer

• Copy all extensions that have no bundle to /system/modules

• Copy the database from C3 to C4 — or update the MySQL credentials to point to the old database

Afterwards, the website should be working again — if needed, run another composer update, clear the cache, and update the database via the install tool.