Billie was playing her mother, Tubach told Yahoo.

The visual effects team then replaced Lourds face with archival footage of Fisher, taken from the original trilogy.

(Disney did not immediately reply to EWs request for further comment.)

Carrie Fisher and Billie Lourd in 2015

Carrie Fisher and Billie Lourd in 2015.Steve Granitz/WireImage

It was an emotional thing for everybody to see her in that position, Tubach added.

It felt great for us, too.

The real challenge was just making the Leia footage we had to work with fit in that scene.

For everyone Leia means so much to.

For everyone Leia gives strength to.