I have styles all set up in my InD files, and I import just fine from Word. However, when I select a paragraph that is in Regular and click on a stylesheet set to Regular (with its different formatting), the type becomes Italic. I've checked the specific styles, the "normal" style, and the "[Basic paragraph]" styles to see if I can find any hidden italic settings, but all say "Regular." I'm using Adobe Garamond, if that makes any difference.
I think this just started happening with update to CC2017. It's annoying, but my main concern is that there might be some glitch with the PDF when it goes to the printer.
Any thoughts would be appreciated.
Do you work with Paragraph and Character Styles?
Italic in InDesign is only applied if an appropriate font is installed.
You should never format anything manually in InDesign. Use always styles!