This must be a common question, but I haven't found an answer that fits my circumstances exactly. If it's out there, you can help me by just providing a link.
Copy source in my workflow is MS Word. Source files use curly quotes for actual quotes and staight quotes for inch and foot marks.
After ingestion to InDesign, the foot and inch marks are all curly. What's more, once they're fixed, if I copy the straight quotes from InDesign and paste them into a different InDesign document, they're curly again.
So that's two different questions I guess. How do I keep straight quotes straight (and curly quotes curly) when ingesting copy, and how do I keep straight quotes straight and curly quotes curly when copying and pasting in InDesign?
Editing preferences is a good solution in the case of Placing or Copying text as you have in your case.
Just for reference, in case it comes up, when you're typing your own text, you can also leave the preferences as they are and type Command+Option+Shift+' on Mac Ctrl+Alt+Shift+' on Windows when you need the inch/foot mark. Or insert your cursor where you need the mark, and choose Type menu > Insert Special Character > Quotation Marks.