Deleted files from a burn disc

Hi! I thought my burn disc is in multisession. So i decided to add other files. However, when i review the additional files, it turn out that those files previously recorded is gone. Is there a way that i can get back those missing files? Considering that i already remove those files from my drive. Hoping for your reply about this matter.

 

Those files are still there. You'll be able to see them when the disc is closed.