Does anyone know how to mass upload Interest Tags records since it is a virtual object? I don't think it can be done using Data Loader or Salesforce Inspector since it is not available

Just wanted to share this in case someone else is looking for a solution — I recently needed to mass assign Interest Tags to Accounts

in the new Nonprofit Cloud, and here's what worked: 

You can use the Topic and Topic Assignment objects to do this, no Apex or Flow required.

✅ Steps to Mass Assign Interest Tags:

1. Open Data Loader
2. Export all Interest Tags:
   • Select "Show All Salesforce Objects"
   • Choose the Topic object
   • Export to get the full list of Topic IDs (each Interest Tag is a Topic)
3. Prepare your CSV for upload:
   • EntityId = the Account ID you want to tag
   • TopicId = the ID of the Interest Tag (Topic) you want to assign
4. Insert into Topic Assignment:
   • Back in Data Loader, select Insert
   • Again, choose "Show All Salesforce Objects"
   • Select the Topic Assignment object
   • Upload your CSV

That’s it! The tags will now appear on the Account records under the Interest Tags component. 

Hope this helps someone down the line — worked great for us!