HTTPS > 50000 port translation with SSL termination

What if you configure the VS port as 50000, does it work? If initial request to https://myurl.company.com/ is getting to the server and being redirected, you should be able to see that in the tcpdump. Or you can use something like HTTPWatch to record http transactions on the browser to verify. That might be useful for comparing the transactions between going directly to the server vs. through the BIG-IP as well.