Richardson died Wednesday in New York following a ski accident in the Quebec resort of Mt. Tremblant. The New York City medical examiner's office said the actress died from a blunt impact to the head.
In a series of statements, the film's production office said the shooting schedule will focus on scenes featuring other cast members, including Julianne Moore and Amanda Seyfried.
The statement read: 'There are some scenes with Liam Neeson which have not been completed, however, we do not feel this is the time to address that matter. Our concern is for Liam and his family at this difficult time,' adding that the entire cast and crew are 'bereft.'
Egoyan added a personal note: 'I had the opportunity to meet Natasha at the opening of the play I did with Liam in New York last year. Her intense pride and affection for her husband was so clear, as was his passion and love for her. I'm so devastated for Liam's loss.'