IBM Cognos User Manual page 26

When importing .mdl files from earlier versions, some features may not convert
correctly, such as legacy data that contains special characters, spaces, and quotation
marks. For more information, see the migration documentation delivered with
your version of the product.
Before you begin
Tip: If you plan to upgrade, ensure you save all your models as .mdl files before
you attempt to upgrade them.
Procedure
1. Open the model in the earlier version of Cognos Transformer and, from the
2. In the Save as Type box, click Exported Model Files (*.mdl).
3. Open your new .mdl file in the current version of Cognos Transformer, make
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IBM Cognos Transformer Version 10.1.1: User Guide
File menu, click Save As.
Tip: By default, Cognos Transformer saves models in the My
Documents/Transformer/Models directory. You can set the default location to
which Cognos Transformer saves models by changing the Models directory
setting on the Directories tab of the Preferences property sheet.
any required changes to the model design, and save it, again selecting the .mdl
format.
Tip: If your IBM Cognos Series 7 model includes security, you will receive a
message when you open the model in Cognos Transformer version 8.x and
later indicating that you must choose how to manage the security during the
upgrade process. For more information, see "Upgrade an IBM Cognos Series 7
Secured PowerCube" on page 158.
When you are ready to use the model in your production environment, you
may want to save it as a .py?-format file.
Models that are created using Cognos Transformer version 8.x and later (.mdl
and .pyj files) are not backward compatible with Cognos Transformer versions
7.x. As a result, we strongly recommend that you maintain the .mdl file for the
Cognos Transformer 7.x model for a period of time following an upgrade.