I have a .zip file ("Level1.zip") that contains, among other files, another .zip file ("Level2.zip"). If I open Level1.zip in Bandizip, and then also open Level2.zip, I can add additional files to Level2.zip. I then close Level2.zip, leaving Level1.zip still open within Bandizip. However, Level1.zip never updates, no matter what I try. Meaning that next time I open Level1.zip, the version of Level2.zip within Level1.zip is unchanged and does not contain the additional files I added in the prior steps.
How can I edit .zip files where one .zip file is stored within another .zip file, without needed to extract and re-compress the Level2.zip file every time I need to modify it? When I used to use Winzip, it detected that Level2.zip had changed, and offered to update Level1.zip for me.