Find/Change changes smart quotes to dumb quotes

I am writing an academic paper and realized in process that the publication uses single quotation marks to begin and end a quotation rather than double quotation marks. When I use Find/Change to accomplish this, the quotation mark changes the mark from smart (curly) to dumb (non-curly).

Is this a bug? How can I keep the quotation marks smart?

Thank you.

Perhaps:

Edit > Transformations > Convert Quotes to Smart Quotes

Edit > Transformations > Convert Quotes to Straight Quotes

Slàinte mhòr.