i am making a simple report based on my main view, and in the filters section i am able to filter by a dropdown field, however it only shows 2 of the 6 options: 

in my case, the options are: 

- yes

- no

- n/a

- don't know

- graduated

- previously enrolled

but the report builder is only allowing me to filter by these values:

- yes

- no 

- don't know

in other testing i have found that the report builder often limits and seems to edit the values from a field when trying to filter.

can you help me figure out how to have all options available when filtering? thank you.

- colin