What are we to think ...

When a 3-person casting gets three VB-approved entries and then is suddenly available as a 6-person casting?

Is it that the client didn't hear the right voice/read and, rather than disposing and reposting, they just want more auditions?

If that's the case, could you ask the client to provide details about what the liked or didn't like or want done differently? I hate to submit sound-alike auditions, which would pass VB-quality-control, but which clearly aren't what the client wants. But no way am I going to try something a little different, which the client might like better but which VB would obviously reject as not being what the client asked for. You see the dilemma?