Microsoft Cloud Security Benchmark policies not reporting in Defender for Cloud

We enable the MCSB security policy at our tenant level and manage compliance via Defender for Cloud. However, I have found that some of the policies are listed are not showing in the Defender for Cloud recommendations.

For example, the policy "Azure SQL Managed Instance should have Microsoft Entra-only authentication enabled" is visible via Defender for Cloud>Environment Settings>Security Policies>MCSB and is linked to Policy Id 0c28c3fb-c244-42d5-a9bf-f35f2999577b. Within Azure Policy Compliance, I can find the policy in the assignment for MCSB and it reports both compliant and non-compliant resources in my tenant.

However, there is nothing reported in Defender for Cloud for the policy under the Recommendations>All Recommendations. 

I have checked the filters applied and know it should be there - the similar policy is showing correctly (named "Azure SQL Managed Instance authentication mode should be Azure Active Directory Only" in the recommendation and security policies, and named "Azure SQL Managed Instances should have Microsoft Entra-only authentication enabled during creation" in Azure Policy - 78215662-041e-49ed-a9dd-5385911b3a1f).

Any suggestions on what could be causing this behaviour ?

Regards

Dominic