[Dx4win] Prefixes

[wo2n]

Hi ,
why won't DX4win let me manually add 4N3, 4O3, YT3,YU3 YZ3 to the NEW 
Montenegro? As of now it's mapped toS5.
Soooooo I have a conflict, like two different countries can't be same 
prefix?
So lets look at 3D2, 3D2/r, no mapping there , but individual call signs.
Looks like it can take only one prefix per country, so it can default to a 
base prefix when in cluster call outs?
How do I get around this problem, without downloading the updated prefixes 
list?
Thanks, Bernie/WO2N.>