Dashboard doesn't refresh from Azure Blob Storage

I figured out what is going on with this. When you have more than 1 file in your azure blob storage, DON'T use the "combine files" button, click on the "binary" link in the first column of the file list. This takes you through the same dialogue to complete the import process, however the powerquery that is generated is different.

Using the "combine files" button it generates powerquery that references your file based on its position in your list of files in your container. If that position changes, ie if you add or remove other files, then the refresh fails because its looking at the wrong file. If you use the "binary" link method it generates entirely different powerquery, which refers to your file by name, not by position. From then on your refreshes will succeed. 

Very confusing, and I haven't seen any explanation of this in any of the documentation.