We're having an issue regarding data designer in MC.
Within schema builder in our SF org we have a custom object which has 2 lookups fields related to the same contact object. The 1st field called'ContactID_1' and the 2nd is 'ContactID_2'.
However, in Marketing Cloud the data designer automatically creates a single relationship between the custom object and the contact object using 'ContactID_1' only. Because 'ContactID_2' is not used for the relating the custom object to the contact object we're having issues with updating data in the custom object using 'ContactID_2' as the entry source object.
How we can achieve the same design in the schema builder in SF - also in data designer in Marketing Cloud?