Microsoft Defender for Office 365 Explorer entity page does not display SCL or BCL values

I have been searching for information why the Microsoft Defender for Office 365 Explorer entity page does not display SCL or BCL values.

I can find the information from the message headers, but for some reason this does not populate to the Analysis tab (the new entity page).

Also, I haven't been able to get full clarity in which phase of the mail flow these get assigned and how.

Any information that can answer the above topics would be highly appreciated.