Thanks for the tip! I tried doing that and it worked perfectly ... all the historical data showed up as it should 

Yes, I had exactly the same experience, resulting in false data

Nope. Those same vendors are still missing for some reason. I can find a record of their sales if I search the Orders and if I export that data the Vendor name and Product titles are there, but they don't show up in the Sales by Vendor report. Also, ...

This is EXACTLY the issue I've been having - data missing for the products and vendors that are no longer in the system but I still want info on -- so I will try your solution and get back to you! I was talking to a help rep again yesterday and they ...

I do have thank the @Shopify team for listening to my feedback. When I created a Sales by Vendor report today I was once again able to see historical data that includes vendors who are no longer currently in the shop. This is a HUGE relief to once ag...

Well said!!

We discovered today the main reports we used to use no longer appear to be available. User-friendly analytics and reporting WAS a big plus to using Shopify in the past. We haven't explored in thoroughly but the new reports are certainly not easy to n...