Separate chapter files

[Q-the-STORM]

Is there a program that can separate chapter files?

e.g. I have this:
CHAPTER01=00:00:00.000
CHAPTER01NAME=
CHAPTER02=00:02:30.000
CHAPTER02NAME=
CHAPTER03=00:07:20.000
CHAPTER03NAME=
CHAPTER04=00:08:30.000
CHAPTER04NAME=

And I want to seperate at CHAPTER03 which gives me 2 files

CHAPTER01=00:00:00.000
CHAPTER01NAME=
CHAPTER02=00:02:30.000
CHAPTER02NAME=

CHAPTER01=00:00:00.000
CHAPTER01NAME=
CHAPTER01=00:01:10.000
CHAPTER01NAME=

I can do this in Excel, but it's really annoying when you have a lot of chapter files that you want to separate in 3-4 files...

mkvmerge can do this, but I already have the video in separate files, I don't want to mux them together, just to pull them apart again...