iXpand Flash Drive saving videos as "paired"

Hello. All of a sudden my iXpand drive is saving iPhone videos in small chunks called “paired video” instead of the entire video. Just started doing this last week. Never did it before, and I can’t find any setting that causes it or changes it. No response from either the SD website or their FB page posts/messages. I like this device and use it a great deal, but this nuisance is a deal breaker. Anyone have this problem or know how it started or how to change the settings? Thank you.