Anonymous Survey Import - Not allowing multiple responses per hierarchy unit

Hi there,

We are importing anonymous survey data for our employees into Qualtrics, and hitting a funny issue. Note that we are assigning each record to an organisational hierarchy unit.
When importing the data, Qualtrics support had advised us not to use the Legacy importer (Via Participants --> Org Hierarchies), and told us to import via Data & Analysis.
When using the importer in the Data & Analysis tab, we were advised that to assign anonymous responses to a hierarchy unit, you need to include the participant ID of the Org Unit's manager in the import. We have done this, but the problem is that it is de-duplicating and not allowing multiple anonymous responses in an organisational unit.
EG: Manager of Team B's code is ABC, the team has 5 people with 5 anonymous responses. We assign the Unique Participant Identifier of each of the 5 records to be ABC, then import. However, Qualtrics only processes one of these records.
Does anyone know how to work around this issue? Is there a JSON edit we can make?
Thanks so much!