Band-in-a-Box for Windows Version 2012.5 (357)

I wrote out a song chart in Am, then needed changed it to Dbm.

I did this using the key box between the "style" and "tempo" boxes. The chords changed accordingly (Am went to Dbm) but when I printed out the leadsheet, the key signature was wrong. It showed 4 sharps (as in C#m).

I looked around for a fix and found the "transpose" menu item. I tried to transpose all, then selected bars of the song from C#m to Dbm but the leadsheet still always showed 4 sharps.

Anyone know how to fix this?