Dear AndrewForryan,
Hello! Welcome to the Microsoft Community. I'm glad to be able to assist you. If I misunderstand your question, please let me know promptly.
First of all, I'm sorry for the late reply.
We learned that after the file is saved as jpg format, there is no problem of author and comment attributes. Have you seen other types of files? Do they have author and comment attributes?
I agree with LesFerch. I try to save many types of files as. jpg files, which have author and comment attributes. How do you save the file as. jpg and what software do you use? Regarding your question, if it is convenient, you can send pictures or detailed descriptions to help us better understand your question, and you can also tell us what you want to do.
Incidentally, the attributes between files are not exactly the same. For example, ".txt file" and ".bmp" have no attributes such as author and comments.
I hope the above information can be of help to you. If you have any progress or questions, please feel free to let me know.
Best Wishes
Pyked | Microsoft Community Support Specialist