Posted by prof1 (Gold Member) (Ranked 1 on Canasta (Gaming Safari) Ladder) on December 12, 2014 at 21:45:51 PST:
Just played one person and had a pile war. When I picked it up I did not have the wild cards that I had discarded. The next game another person. A large pile they picked up and the did not have the meld so they hit the undo button... but they were allowed to keep the pile cards...