It is possible to fix “other” traffic in Google Analytics in just a few very simple steps. If you would like to move a source or a medium from “Default Channel Grouping” to a different channel in the default channel group settings, there are a few simple steps to complete this. Alternatively, you can also create a new channel to better define your “other” traffic. All the steps can be found in the original article.
Read more: How to Fix (Other) Traffic in Google Analytics in a Few Easy Steps