4.0 Upgrade and Migration
Upgrading from 3.5.1.1 to 4 Upgrading From Retain 3.5.1.1 or 4.x to Current Version
Upgrading from 3.x to 3.5.1.1 Retain 3.x to Retain 3.5.1.1 (Windows) or Retain 3.x to Retain 3.5.1.1 (Linux)
Upgrading from 2.x to 3.5.1.1 Retain 2.x to Retain 3.5.1.1 (Windows) or Retain 2.x to Retain 3.5.1.1 (Linux)
Upgrading from 1.x to 2.6.2 Retain 1.x to 2.6.2 Upgrade
Moving Retain to a different server Migration