Webflow multi reference field

[Simon_Baudoin]

Hello everyone,

I’m trying to synchronize my Notion database with Webflow, including a multi-reference field for destinations.

My setup:

In Notion:

• “Roadbook” database → Contains roadbook information.
• “Destination” database → Contains locations linked to each roadbook.
• Relationship between “Roadbook” and “Destination” (a roadbook can have multiple destinations).

In Webflow:

• “Roadbook” collection → Synchronized with Notion.
• Multi-Reference field “Destinations” → Should contain all destinations linked to a roadbook without overwriting existing ones.

My Make workflow:

1. Detect changes in Notion (when a roadbook is created or modified).

2. Retrieve client data.

3. Use an Iterator to split the “destination” relation.

4. Use a “Get a Page - Destination” module to fetch Webflow IDs of the destinations.

5. Use an Array Aggregator to group the destination IDs.

6. Update the Webflow collection.

Issue encountered:

Each time the scenario runs, new destinations overwrite the previous ones in Webflow.

Example:

• Expected result: [ "Milan", "Rome" ]
• Current issue: If “Milan” is already present, “Rome” replaces it instead of being added.

Goal:

I want to add new destinations to the existing list without deleting previous ones.

Possible causes:

• My Array Aggregator is not properly grouping all values.
• The mapping in Webflow is overwriting instead of merging the destination IDs.

Help needed:

• How can I configure the Array Aggregator to prevent overwriting?
• Is there a better approach to handling a multi-reference field in Webflow using Make?

I’m attaching my blueprint.
blueprint.json (353.4 KB)

Thanks in advance for your help!