Audio Channels in Timeline Keep Changing?

I have some audio tracks, on those tracks I inserted a .wav file that has 4 channels.  I only need 2 channels. ( 1 and 2 )  I unlinked the audio and I am just using channels 1 and 2.

Channel 2 on the timeline keeps defaulting to Channel 1 - I change it and then next time I open the p[roject the audio on channel 2 goes back to channel 1.

I hope this makes sense.

This picture is what it needs to be

This picture below is what it changes to and I have to reset the channel.

Below is info on the audio channel

Im doing something wrong right?

I hope not because I have already layed in and adjusted all my audio.

Thanks for your help!