[Dx4win] AC0, AC9 and AJ7 prefixes for WPX

[Steve Lund]

I was recently trying to determine why my DX4WIN prefix count does not
agree with my WPX totals.

I have found that AC0W, AJ9X, and AJ7T are not accepted as valid prefixes
by DX4WIN.

Why is this? They are validly issued FCC calls and I received credit for
them from CQ.

I tried to use the File->Databases->Countries and add the prefixes under
the USA, but that didn't work.

How does one update the database to get credited for these prefixes?

Steve, K6UM