Distinguishing what constitutes a marital asset isn't always as straightforward as it seems. For example, if a car was purchased prior to the divorce, that car would belong to the buyer. However, if that car was sold during the marriage in order to purchase a new car, then the new car could be considered a joint asset.
By having a traceable paper trail, you can show the courts exactly how and where your non-marital assets have been transferred. This increases your chances of claiming specific goods as your sole property.