About Forecasting Migration
If you are migrating data from a 6.x version of Siebel Sales, you need to determine whether:
To use the automatic upgrade feature, or,
To use the data migration utility.
Note: Forecasting migration only applies when you are upgrading your Siebel
application from 6.x versions to 7.x or later versions.
The following topics describe the Automatic Upgrade feature and the data migration utility. Read both sections carefully before upgrading to Siebel 8.1.