Aliasdomain 301 Redirect Not Working

[Eleven Cool]

I have a domain for which I want to do a [R=301,NC,L] redirect to its parent site. I've tried creating an Aliasdomain for it because I noticed that Aliasdomain has 301 redirect as an option, however, it isn't redirecting as a 301. Its just serving as a plain old alias with no 301 redirect even though I've selected that as an option.

Is 301 redirect on an Aliasdomain a broken feature or am I missing something?

I'm using the latest stable version of ISPConfig 3 and these are the settings I used to setup the Aliasdomain:

Domain: myaliasdomain.com
Parent Website: myparentwebsite.com
Redirect Type: R=301, L
Redirect Path: 
Auto-Subdomain: *.
Active: [X]