The move was part of a trade arrangement between Missouri and Idaho that involved NHL-contracted players. Both Karlsson and Vance have played all season for the ECHL's Idaho Steelheads, the AA affiliate of the Dallas and Texas Stars.
The trade will allow Karlsson and Vance to get more playing time down the stretch. Missouri is not projected to make the playoffs, currently in 6th in the Central Division.
Defenseman Martin Lee will be joining the Steelheads from the Mavericks. Lee is a three-year vet of the ECHL and is on an ECHL contract.
Texas Stars GM Scott White was not available for comment.
(Image credit: Idaho Steelheads)