Both players are available for selection for tomorrow's FA Cup clash against Crewe Alexandra but manager Kenny Jackett admits it will be a big blow to his future plans.
"Adam has been recalled by his manager at QPR, who wants to have a look at him," explained the Millwall boss to the club's official website. "The same applied to Karl Moore.
"I will assess the needs of the squad in terms of possible replacements, but we will only bring players in who can go straight into the side and improve it."
Elsewhere, winger Ryan Smith completed his move to Southampton, as revealed by Millwall Mad earlier this week.