In Google Analytics, under Conversion > Attribution > Attribution Model Comparison Tool, I am running into an attribution problem. Our e-commerce company has partnered with a financing company that allows visitors to purchase our product by financing with our partner. This requires our user to click a link that takes them from our purchase page, to our partner's page. After getting approved for financing, they are redirected to our page, and the purchase is completed. This causes a problem in Google Analytics. To Google Analytics, it looks like our partner page is the referring media source, so many of our purchases show up under the source/medium of our financing partner. In reality, these people originally came from some other media source like Facebook, instagram or google.
Is there a way to bypass the traffic from this specific source/medium (our financing partner) so that I can see where these purchases originated from?