Will class token be swapped for instance token when [filewords] used in instance prompt?

[Jonseed]

I used "a photo of [filewords]" in the instance prompt in the UI, and put a unique token in the instance token field, and the class that is mentioned in my files in the class token field. The "exising prompt contents" set to class + description. I thought that would swap out the class token in my files and replace it with the instance token when training on the instance prompt, but it doesn't seem to be working that way. I did some training, and it did not seem to be learning my instance token at all. Sample images were nothing like the instance.

I changed my instance prompt to "a photo of INSTANCE CLASS, [filewords]" with my unique instance token and class mentioned in the UI field, and now it seems to be learning the instance token. Is it also swapping out the class for the instance in my files and appending that to the instance prompt?

For the sample prompt, I should only have to use my instance token, and not the class, is that right?