Layer not appearing in PDF even with Print selected in Layer options

[hansonbeesnest]

I've got two open files in Illustrator. I've been working in them both for hours. I've saved them both as PDFs and everything was fine. I then added new layers to both and saved them both and everything was still fine. 

Then I realized that I wanted one of the layers to not be visible in the PDF, so I clicked the eyeball to turn off visibility for that layer in both documents but kept the other relevant layers visible. 

Document 1 saved fine. Everything displays as I want it to. Document 2 is missing a layer. That layer is visible in Illustrator. That layer's options are set to "Print" (see image). When I Save As... PDF, I don't get any options to "Print all layers." 

What's truly puzzling is that it's working fine for one document and the other it's not. 

[Kurt Gold]

Can you share both Illustrator files?

[hansonbeesnest · Accepted solution]

I figured out the issue. Although I was seeing the text as black, for some reason it was actually white. There was some kind of mask or some other feature involved that allowed me to see the characters but in reality, their fill was set to white. Once I went back in and made sure their fill was set to solid black, the export worked.