Some ad info (ad title, headline, long headline,title part 1,...) do not return value when downloading ad report

Question

Dear Microsoft advertising team,

I am using Report API Service to download performance report

I proceeded to download Ad Performance Report with columns define in belowed link

https://learn.microsoft.com/en-us/advertising/reporting-service/adperformancereportcolumn?view=bingads-13

After downloaded, some columns do not return value as b

Please help me to answer that

① Ad info in red border actually not returned value ?

② If they are not return value, why are they defined in AdPerformanceReportColumn?

Thanks & Best regards,

Phu