Non-traditional key signatures

Hi,

I am trying to notate a score where:

- tonic is D
- B and E are flattened
- F and C are sharped

I created this key signature and dragged it into the score, no problem. But when I enter a "C" with a mouse, it is entered
as a C natural rather than a C sharp. Same for F. Same for the flat notes as well -- they are entered as naturals rather than
what the key signature indicates.

Then, when I sharpen C, for example, it shows up as an accidental, with the sharp in front of it, which it should not.

Does this make sense? I would like to be able to write in non-traditional scales.

Thanks,
-Seth

p.s. attaching a screenshot