Translate field content into master language of the site using TranslatePress

We have a WooCommerce based e-commerce site where we offer mainly services but also products with time-based bookings. There we have Vendors who can create their own services as activities. The site is Multilingual and uses TranslatePress plugin. When Vendors create/update their profile or create/update their activities can use any of the supported languages of the site (currently EN / DE / IT / FR). The master language of the site is English, so text content must be stored in this language in the referring tables to be correctly translated later into the Visitors’ language by TranslatePress. For this reason, we need an enhancement: When Vendors create/update their profile or create/update their activities and using any language other than the Master language of the site, the conte...