The tech stack that was at the heart of now-defunct digital brokerage Convoy is on the move again, being sold to DAT in a move seen as significantly broadening that company’s value proposition in the freight market.Freight forwarder Flexport, which acquired the tech stack from the remnants of Convoy less than two years ago, said Monday it is selling the product to DAT. When a company retreats from something it bought quickly, it is often a sign of defeat. (An old reference certainly, but the dea...