Changing columns when using Exposed Filters

Hello, not sure if this is a support request or the module may need tweaking etc

I have a view that plots "Students" against "Curriculum Areas" (these are chosen in another content type "Observation") As you can see below, Billy Bain and Toby Campbell are both in Year 1 - but this is only apparent in the modules where an Observation is present (highlighted red)

table before filter

When I add an exposed filter, to filter down to show results from a particular class - then my results get rid of the columns along the top except those that it sees value in. I would much rather keep the table exactly the same (the filter would actually work as it would only show the correct row where the student belongs to a particular class)

As you can see from the screenshot, the exposed filters removes all empty fields (ELG 04 - 06 is missing and ELG 07 - 09). This information is important as it's showing me gaps where there have not been Observations made with a student.

table after filter applied

Is there a way to keep the columns in or overide the view results so I don't lose this vital information?

Thanks, Garry.