New Alternate View Redirection

[seoeuroflorist]

Hi,

We are merging two sites, differentiated by the type of customer (consumer or corporate).

Currently we have:
www.consumersite.com/product/
www.corporatesite.com/product/

When on the new site, the type of customer can be switched by clicking 'Corporate' or 'Customer' which adds ?user=Business or ?user=Private to the url which then redirects so the URL is the same but certain features have changed.

We block ?user=Business and ?user=Private in URLs in robots.txt to prevent duplicating pages. Should we redirect like:

www.corporatesite.com/product/ -> www.consumersite.com/product/

Or:

www.corporatesite.com/product/ -> www.consumersite.com/product?user=Business (this will then redirect but the parameter is blocked by robots.)

I'm concerned redirecting to a URL that is blocked from indexing is an obvious error.

Any ideas are welcome.

Thanks!

[OlegKorneitchouk]

If its possible to avoid a redirect, do.

www.corporatesite.com/product/ -> www.consumersite.com/product/ is better than adding a redirect into the chain.