Analytics Software

Hi
I got this weird problem when I was working on a report.

there are several columns in the report, like work number, work id, work name, time started (in min), actual time started (in min), time ended etc.
work number is actually a rowcount function and I sorted this in the table view with work type column with group by condition.
It was working fine.

Now I added a new column in to the report to calculate wait time using the formula actual time started - time started.
I don't remember if i accidentally did something else. I saved the report with a new name.
Now when I run the report the work number column is not displayed in the compound view, I can see it in the table view as being disabled or hidden.

Even the original report is behaving in the same manner, so the option of doing all the work again doesn't exist.

Can someone here has any clue where I did the mistake. I tried all different things I know of like deleting the existing column and adding a new column and parsing the condition in the new column, etc.

how can I enable that work number column in compound view?