Bulk Tag Addition Not Triggering Webhook

Hi Manychat Community,

I'm facing an issue with bulk tag management and webhook automation. Here's my scenario:

Current Setup:

• I have 4000 contacts with Tag X
• I'm trying to add Tag Y to all these contacts
• Tag Y is set up to trigger an automation flow
• The automation flow makes a POST request to an external webhook

The Issue:

• When adding Tag Y to these 4000 contacts, the webhook trigger is not firing
• No data is being sent to the external webhook
• The webhook endpoint team confirmed their side is working correctly and receiving properly formatted requests when tested individually

What I've Already Checked:

• The automation flow is published and active
• The webhook URL is correct
• The trigger is properly connected to Tag Y
• Individual contact tests work fine

Questions:

1. Could this be a rate limiting issue?
2. Are there specific limitations for bulk tag operations?
3. Has anyone successfully implemented a similar setup with large contact groups?
4. What's the recommended approach for handling bulk tag operations that trigger webhooks?

Any insights or suggestions would be greatly appreciated. Thanks in advance!