Package with full details

Hello everybody,
I started to use unreal for a few months. I did my first project on unreal. it was a personal project.
The project is finished and i would like to make a Vr version, but when I package my work it does not do it in Cinematic mode but in epic mode. which has the effect of creating problems with my transparent materials.
Do you think it is possible to solve this problem?
Thank you