Bachie moved up from the practice squad to the active roster Monday, Dave Birkett of the Detroit Free Press reports.
Smith is set to undergo surgery on his injured thumb, Joe Hoyt of The Dallas Morning News reports.
Coach Dan Campbell said Monday that neither Vaki nor Jacob Saylors is viewed as the Lions' strict RB2, and Detroit will use a committee approach behind Jahmyr Gibbs, Nolan Bianchi of The Detroit News reports.
Martin is the fourth and final wide receiver on the Lions' 53-man active roster for the regular season, Tim Twentyman of the team's official site reports.
Saylors earned the trust of coaching staff during training camp and could see consistent playing time on both offense and special teams this season, Tim Twentyman of the Lions' official site reports.
Vaki is in line to operate in an elevated offensive role to open the regular season after Isiah Pacheco (back) was placed on injured reserve Tuesday, Tim Twentyman of the Lions' official site reports.
LaPorta (hip) didn't play in any of the Lions' preseason contests.
Browns is one of six wide receivers on the Cowboys' initial 53-man roster, Tommy Yarrish of the Cowboys' official site reports.
Flournoy is listed as the Cowboys' third wide receiver on the depth chart behind CeeDee Lamb and George Pickens.
Ferguson did not play in any of the Cowboys' three preseason games.
