Issue Summary

When users create a page and then opt to publish it as a blog post via the "Publish" button, followed by selecting advanced options, the expected notification that a new blog post has been created is not sent. This contrasts with the usual method of directly creating a blog post from the blog post tree, which successfully triggers notifications.

One important detail that we noticed is that the UI process involves converting a page draft into a blog post using the following API call:

https://customersexampleinstance.atlassian.net/wiki/rest/api/content/9999999/convert?destinationType=blogpost&sourceStatus=draft&destinationSpaceKey=EXAMPLE

It appears that the notification is not triggered because the original draft is a page, not a blog post.

Moreover, the endpoint used for this conversion in the UI is scheduled for deprecation:
https://developer.atlassian.com/cloud/confluence/changelog/#updated-changes-in-anonymous-access-to-convert-content-body-api
This may also contribute to the notification issue.

Steps to Reproduce

1. Navigate to a page and click the "Publish" button.
2. In the modal with more options, select the option to publish as a blog post.
3. Screen Recording 2025-09-09 at 10.59.57.mov

Expected Results

Notifications should be sent to users informing them of the new blog post creation.

Actual Results

The notification isn't sent to the blogpost watchers from the space.

Workaround

As a workaround, manually copy the content from the original page. Then, create a new blog post directly from the blog post tree and paste the content, which will trigger the email notification as expected.