[DXBase] Dxbase 2004 Call sign question

[Hank Kohl K8DD]

On the Secure Electronic Order Form page it says:
Enter any additional base callsigns that you have held and plan to use in 
DXbase up to nine.

If I understand right, I can make databases for k8dd, k8dd/c6a and fp/k8dd, 
but I have to register v47dd and any club calls that I have.

Does this mean if I get a C6A call, or get a V31 call when we go there, 
that I would have to register these calls before I can add a database?

I see it's $5 to register a call sign change, is it $5 to add a call sign 
after the original registration?

73    Hank    K8DD