We have a forum running on YAF 2.24.20. It is used as support portal for our customers. We are going to upgrade to the YAF 2.3 but would like to test it with the existing contents. Is it possible to install YAF 2.3 as a separate application and attach it to the existing v2.2 SQL database so that both forum instances will coexist without affecting each other?

No you can't use the same database. You would need to clone the database and run it as different database.

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Ok. Then what is the right way to upgrade the existing database used with the v2.2 to use it with the v2.3? If I deploy the v2.3 and attach it to the clone of the v2.2 database, then open the install page - will it upgrade the database automatically?

Ok. Then what is the right way to upgrade the existing database used with the v2.2 to use it with the v2.3? If I deploy the v2.3 and attach it to the clone of the v2.2 database, then open the install page - will it upgrade the database automatically?

Yes of course the upgrade wizard will update the db

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