Custom control protocol

[gary_in_springhill]

I hope someone can advise me:

I have an old server running 14.04 Ubuntu and 1.30.4 Zoneminder with some Ultrak kd6 domes. All working perfect but I'm preparing to upgrade my os to 18.04.

I noticed I'm using a control protocol Pelco-D2 that I must have customised many years ago when I first installed Zoneminder. It is not in the directory /usr/share/perl5/zoneminder/control the original PelcoD is though.

Shown in the attached pic are the contents of the control directory and protocols listed in Zoneminder, you will notice there are a lot missing from the list.
It was so long ago when I created this Pelco-D2 I have totally forgot where Zoneminder may store custom protocols?
I want to be sure to save it before I reinstall 18.04!

Any ideas?
Thanks