Box Mobile - Hyperlink files embedded within Excel
While opening linked files within an excel file on the Box mobile application.
This is happening due to the current preview architecture for excel files and nested/linked files within the Box application. Although you can 'see' the desired file visible on the screen, within your current workflow, the Box app only recognizes the original file as being 'opened' which is why the original files are being saved and not the file open currently.
Kash shared this idea