Customization > Extensibility Through Profiles, Stereotypes, Tag Definitions and Scripts > PTC profiles > PTC profiles > Updating all PTC profiles in a model
  
Updating all PTC profiles in a model
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• To update the PTC profiles in a model, you require Repository Write access permissions to the Model's Database.
• Do not make changes to a PTC profile. Any changes you make will be lost when the profile is updated.
Note that you can create Tag Definitions outside of the PTC profile, and link those Tag Definitions to Stereotypes in the PTC profile. When the PTC profile is updated, the links will not be broken.
• Do not create copies of a PTC profile within a model, or create copies of a PTC profile through XMI Import/Export. The copies of the PTC profile will not work correctly and you will not be able to update the copies through the Update All Profiles command.
To update the PTC profiles in a model:
1. From Modeler, right-click a PTC profile package, and then click Update All Profiles.
2. From the dialog, select the check boxes to ensure that you have a version of the model prior to profile updates and any migration of data, and a version of the model after the profile updates and any migration of data are complete.
3. Click OK.