Unable to keep Encore channel recording scheduled

Apologize in advance if the answer has been explained before.  I have attempted to schedule a recording of "The Butterfly Effect" on at least 12 different times.  Within a couple of days, it disappears from my scheduled recordings, and I don't understand why this is.  Movie is scheduled for Encore and Encore West channels on Apr. 14th.  I have tried to schedule the recording from the search box on two different boxes in my house.  I've tried from my phone as well.  I've tried different recording options as well.  I have 70% of my HDD open in the DVR.  Can someone fill me in?  I was able to record in Encore 5 min. in advance of the movie Married to the Mob last night, so I know it's not a channel thing.  The scheduled recording disappears during the day, I've noticed, too.  It was there yesterday morning, but then it was gone after I got home from work.  I have scheduled 4-5 separate showtimes, and they all, always disappear from the list.  TIA.

P.S.: This forum is picky about registry names.  It called my last name obscene.  VANDYK3 is not obscene guys.  Also, I couldn't use my daughter's name Grace because we're not allowed to use the word "ace".  LOLZ.