About the project documentation and other documents(employer w2s and tax filings)as it is INHOUSE project

I have H1B visa interview on 14th NOV 2014 at Hyderabad consulate.

I will be working in an in-house project at petitioner’s location .

When I checked with employer about the project documentation and other documents(employer w2s and tax filings) , he was telling those are confidential documents

and he will send those documents directly to consulate through attorney .

So I need to appear the interview with out project documentation and and other documents(employer w2s and tax filings) though is in-house project.

Will it be a problem appearing with out those documents?

Is it possible to employer sending confidential documents through attorney to consualtae? Can VO see those documents at the time of interviw?

What should I answer if VO ask me about those documents?