Some of the most successful pros on ABC's Dancing With the Stars still don't know if they are returning for the show's 20th season in the spring.

'Dancing With the Stars' Winner Alfonso Ribeiro's Injuries Are 'Still There' Despite Soon Appearing On Live Tour

Karina Smirnoff, Peta Murgatroyd and most recent champion Witney Carson recently spoke to RumorFix about not being sure if they will be asked back for season 20, which is the 10-year anniversary of the show.

"I love the show - I've been part of the show for ten years - at this point I think everybody is still trying to figure out what's going to happen with the big 20th season," said Smirnoff, who won season 13 with J.R. Martinez.

Robert F. Kennedy Jr. 'Considering' Competing on 'Dancing With the Stars'?

Meanwhile, Murgatroyd believes that she deserves to be back. The pro, who won with Donald Driver in season 14, said that she thinks she's "done a great job the past couple of seasons. I would be honored to be a part of it."

Carson simply said "I don't know [if I'm coming back]. You should ask the producers. You should get on that."

This past fall, Carson won Dancing With the Stars with Alfonso Ribeiro on just her second season competing on the show.

As it stands now, longtime pro Cheryl Burke is the only one to confirm that she will not be a part of season 20, a decision she made for herself. It remains to be seen if any other pros will leave or if DWTS will want to feature as many familiar faces from recent seasons as possible.

Dancing With the Stars returns for season 20 on Monday, March 16 on ABC, according to host Tom Bergeron.