Progress Fathom Replication
Installation Guide

> ## Upgrading an earlier version of Fathom Replication

> If you are upgrading an earlier version of Fathom Replication, be sure to back up the following files:

> - Source database.

> - Target database.

> - database.repl.recovery files.

> Because Version 3.0A upgrades the database.repl.recovery files, once you go to Version 3.0A you cannot go back to Version 2.0A (or Version 1.0A) using your Version 3.0A files. If you need to get back to Version 2.0A (or Version 1.0A) on the source machine you must back up your source database, start AI, enable and configure Fathom Replication.

> On the target machine, you must make sure you have set up your structure file, restore your backup from the source, enable and configure Fathom Replication. Now you can run Fathom Replication by simply starting your source and target databases with a Fathom Replication qualifier.

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