service misidentification

[Josh Amishav-Zlatin <jamuse () gmail com>]

When I run nmap v6.47 against an RDP server on a non-standard port, the
service is correctly identified. However, when I run the same command using
nmap 7.12SVN the service is not correctly identified. For example:

#:/opt/nmap-6.47# ./nmap -A -p 33896 -Pn x.x.x.x
...
PORT      STATE SERVICE       VERSION
33896/tcp open  ms-wbt-server Microsoft Terminal Service

#:/opt/nmap-7.12SVN# ./nmap -A -p 33896 -Pn x.x.x.x
...
PORT      STATE SERVICE       VERSION
33896/tcp open  ssl/unknown

I've tried setting the --version-intensity to 9, but no joy. How can I
debug and fix this issue?

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