[V8i Ss3] What does it mean when a Font is Listed in Red Text

We are trying to phase our RSC fonts that originally were TTF fonts. We decided to start small - Arial

But in MicroStation, I see two places Arial is listed - Once as @Arial Unicode MS and again as Arial Unicode MS but both are listed using Red text, as it looks here.

And if I select it, like in the Place Text tool settings or Text Editor dialog box, the editor displays some other font, but the text on my cursor looks as I expect. However, if I place it and then check its properties, it lists the font as Arial, and in the dropdown list that can be displayed in the properties dialog box, it lists Arial, but it's at the bottom of the list, after the SHX fonts.

Is there some other location we need to specify that we are not using an Arial RSC font?