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The data for internationalization is saved in the workspace under the Resources project. The table is then exported with the solution when the solution is deployed to the application server (if Export i18n data is checked in the Solution Export Wizardwizard).
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When no i18n table is defined at solution level, the solution will use the global settings. Otherwise, the i18n settings at solution level will override the default preferences.
When importing a solution, the Import wizard provides options to import:
When exporting a solution, the Solution Export wizard provides an option in the Choose export options page to export i18n data.