Actualmente tengo varios cliente a los cuales les creare a cada uno un Centro de asistencia de última generación pero no encuentro la opción para duplicar un proyecto con todas las configuraciones ya cargadas.
Welcome to Atlassian Community!
Next-gen projects are independent of other next-gen and also from Classic projects, so none of the configurations can be shared.
The option that you mentioned is "Create a project with shared configuration" which is currently only available for Classic projects.
There is a feature request suggesting the implementation of this ability:
Please, click on vote and watch to receive updates about the feature.
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