Odd symbols that won't disappear

[Xavier]

I have been working on cleaning up the OCR in a large document. I am getting some odd symbols that I have copied, press Control+H and tried to bulk delete, but they just stay there.



These are the ones in light grey right after the Page Break.

I've attached a doc with some of the odd symbols. If anyone can help I would be grateful.

There is also a second issue, where Word is inserting tiny little boxes with question marks inside. These also won't disappear.