> Tony, were they all CW contacts? If so, you need to uncheck the CW mode
> box, these QSOs predate the validity for CW-only DXCC. AM or SSB
> contacts are OK.
>
The CW only DXCC started 1/1/75. Canal Zone didn't get deleted until
9/30/79, so it would be possible to have CW credit for a KZ5...
73 Stu KC1F