Editing MKV with subtitles.

I've tried a large variety of things and I cannot seem to do what I want to do.

I basically want to cut off a chunk of video and keep any subtitle information with the chunk.


Anything I try either
1 - discards the subtitle info outright.
2 - doesnt have a function to cut the video.
or
3 - Requires you to do one thing, then the other, then combine them.

I want a simple, ~ Import the video, cut the video, export the video. All while keeping the subtitle information.
Anything like that?

Any assistance would be awesome.
Thank you for your time.