Media encoder Preserving Audio channels in a variety of clips

Hi y'all, I am wondering if their is a way to set in a media encoder preset to preserve the maximum amount of audio channels that the clip has when applying to hundreds of clips and with varying audio channels. My current workflow at work for creating proxies for hundreds of clips with a range and variety of audio channels is having to manually go into every clip and make sure that the maximum available audio channels are selected. Is there a way to have media encoder automatically do that? Another thing is if I highlight them all and select one that I know has the highest amount of audio channels then it only changes the ones with the exact same amount, the rest are switched to mono tracks. Thanks in advance.