Migrating to new/fresh installation - migrate Persistence DB?

Hello Guys.
Starting to migrate my existing setup to a new installation, i already have a persistence service running with JDBC MySql, where many items are logged.
Is it possible just to let the new instance connect to this db - and as long as the items has same names like before - then it will continue writing in this DB or? (the service is set for using item names in the Database)

Yes, if your Items remain the same and your mysql.persist file remains the same then the new instance can use the existing MySql database and nothing in the database will change.

Thanks - perfectly… also if I change the MySQL instance to run on another machine? But just change connection up from localhost to something else?

Yes, connection string is all you need to change as long as you keep the same itemnames.