The ability to import HTML content was possible before as per the article: https://d-art-s.atlassian.net/wiki/external/OGZmODAzMmIxZWRhNGRmMmFiOWJiN2UyMTllZDM3Nzg

However, Currently, the ability to bulk import HTML into a Confluence Database, as you previously did, is no longer available. This change can indeed impact workflows that rely on importing page URLs in bulk. While the direct import of HTML or CSV files mapping to a 'Page Link' field is not supported at the moment

Suggest restoring the the HTML content import to Confluence databases functionality, as it's very useful for selective import of the data and content review.