Only one of four audio tracks is being imported
So, I'm still very, very new to video editing and everything that entails, so please bear with me. So, I have a YouTube channel and a Twitch account. I use some software called OBS to stream and record, and then I use Hitfilm 4 Express to make videos out of the streams and post them to YouTube. For a while now, I've been trying to get multi-track audio working, and I finally did it. OBS records 4 audio tracks, streams 1, and tracks 2, 3, and 4 are recorded. It records into an mp4 file and, by opening my streams in VLC, I've made sure that, in fact, all 4 tracks are there in the file. However, when I try to import the video into Hitfilm, it only imports audio track 1. Now, track 1 is the track with all the audio, but I've lost multiple streams because the game is too loud, or too quiet, and I can't change it independently because the other audio tracks weren't imported! I currently using a windows 10 machine with 16GB of RAM, and a dual core Intel i5 3.3GHz processor. I also record in 1080p with 48000KHz audio, and this problem is very recurring. If you need more information, please let me know and I will respond ASAP. Again, if I didn't explain it well, I'm very sorry, but thankful if you'll bear with me.