APM Policy loses POST request content when forwarding across multiple domains.

We have a problem like this, the AAA domain looks at the external side, we forward the requests from the outside to a virtual server located in the CCC internal domain as a policy base. We are authenticating with an apm policy with an internal server multidomain, but we lose the content of the incoming post request while forwarding. Of course, while the POST request is forwarded, GET returns, it catches it and POST is translated. However, the content disappears in the meantime.

Is anyone having this problem?