Synchronize strips styles from text in object
So this is an odd bug I've discovered. I'm still trying to figure out if it's me or a problem with InDesign CC. I have a book with multiple chapters. Chapter 1 is the style source. In most of the chapters, there is a text-filled object called NFTF Box. Each NFTF Box has several paragraph styles in it (manually applied). In the Object Style Options for the NFTF Box, it states: Paragraph Style: Paragraph Style: Name: [No Paragraph Style].
However, when I synchronize documents, the paragraph styles get stripped from the text in the NFTF Boxes in all except Chapter 1 (the style source). This happens every time. Given that no paragraph style is designated for NFTF Box, it shouldn't be stripping paragraph styles from boxes in other chapters. Incidentally, I have other object styles with text in them, and synchronizing documents does not strip those of their style. Does anyone have any clue what could be going wrong?