Import command (CM tool integration)
This command can be used in the context of the CM tool integration or with the Export command to copy a Package from one Model to another.
This command appears on the context menu when you right-click a Model or Package, and then point to Tools > Package Import/Export.
To use this command, you require a Modeler license and a CM Integration license.
CM tool integration
This command is similar to the Import New Packages command, except that you use the CM tool to first get or check out the required Package to a folder, and then use this command to add the Package from that Folder.
Unlike the Import New Packages command, this command allows you to reuse a previous version of a Package.
For more information about reusing Packages, Reuse — Sharing package files (CM tool integration)
* 
If you are working with IBM Rational ClearCase you can add a Package from the ClearCase view.
Copying Packages
You can use the Export command to copy a Package to a directory. You can then use the Tools > Package Import/Export > Import command to copy that Package to another Model.