Section Translation allows users to select among [the available translation systems](https://www.mediawiki.org/wiki/Help:Content_translation/Translating/Initial_machine_translation#Machine_translation_availability) for the suggested translation of each sentence. The selection is persisted for the following sentences while the user translates the section. However, translating another section/article on a different day requires the user to select again their preferred service.
This ticket proposes to persist the service selected by the user across sessions. In this way, users can select the service that works the best for their language. As with Content Translaiton, the preference will be kept for each language pair. Since quality and MT availability can differ on each pair.