I Install all application updates (express installation) CU7 Ax 2012 to current CU6 AX 2012.
Then I got this error at model store:
The model contains a customization of a configuration key. The model cannot be imported because you can overlayer a configuration key from the patching layer only.
If you have previously installed the Data Import/Export Framework from InformationSource, you must fully uninstall it and then reinstall it for cumulative update 7 for Microsoft Dynamics AX 2012 R2. As part of this full uninstallation, you must remove all binary files by using Add/Remove Programs and uninstall the Data Import/Export Framework model. For more information, see How to: Remove (Uninstall) a Model.
Open Tools > Model management > Models installed from the developer workspace to see the models. Or you can call Get-AXModel | select Name in the AX management shell.