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The new JobScheduler doesn't need the old database records.
The configuration of the jobs, job chains, orders, etc are stored in the ./config/live/ folder and not in the database.
But you cannot see, for example, the old logs.
Look at See Advantages of using a database with JobScheduler for more information about what the database has storedJobScheduler stores in its database.
If you want to see for example To see the the old logs and other information stored in the database in JOC then , you have to migrate the database.
In The tables which are used can be found in ./db/dbms/scheduler.sql you find the tables which are used. All .
Note that all of these tables have the ID of the JobScheduler as a (part of thetheir) primary key.
The records with the old JobScheduler ID will then have to update to be updated with the new ID.