I created a csv file for lead entity and would like to import them into D365CE... works fine using native import function. But next time I want to insert/update a new csv file (using ID Number as key). But even after I've been setting up alternate key on ID Number, it still does not update the existing records in D365CE. Import wont update records using alternate key. it can only be used programmatically to update records. You can't update records natively with the help of alternate keys.
Assume you are importing new projects from an external source via dataflow to an existing "Projects" dataverse. That dataverse has an N:1 relationship with your ProjectAssign dataverse. How do you use "alternate keys" to tell it what the foreign key is in Projects to relate to the primary key of the ProjectAssign dataverse?
