Mangled headers on CXFRS request

I am using Camel version 2.11.1, and CXF version 2.7.8.

I am trying to use the cxfrs component to submit a request to a rest service
from camel. I am invoking the route that makes the cxfrs call via a proxy
and have a processor that sets up the headers - bi is the BeanInvocation
object from the proxy - token is a string. Here is the processor:

exchange.setPattern(ExchangePattern.InOut);
exchange.getIn().setBody(null);
exchange.getIn().getHeaders().clear();
exchange.getIn().setHeader(CxfConstants.CAMEL_CXF_RS_USING_HTTP_API,
Boolean.FALSE);
exchange.getIn().setHeader(CxfConstants.CAMEL_CXF_RS_RESPONSE_CLASS,
bi.getMethod().getReturnType());
exchange.getIn().setHeader(CxfConstants.OPERATION_NAME,
bi.getMethod().getName());
exchange.getIn().setHeader(HttpHeaders.AUTHORIZATION, token);
exchange.getIn().setHeader(Exchange.ACCEPT_CONTENT_TYPE,
"application/vnd.company.foo+json"");
exchange.getIn().setHeader(Exchange.CONTENT_TYPE,
"application/vnd.company.foo+json")
exchange.getIn().setBody(bi.getArgs());

When the request is received downstream, the authorization header is
missing, and the camelacceptcontenttype and contenttype headers' values are
changed from what I set to 'application/xml'.

Wondering if I'm doing something wrong, or if there is an issue with the
version of Camel and CXF I'm using.