Zend certified PHP/Magento developer

New files added to 7zip arhive are not protected by password

I have an archive in my onedrive for business directory that contains sensitive information that I keep password protected for extra security. The problem is, when I add new files to the archive using the 7zip interface, they are not password protected and they can be viewed without entering the archive’s password. So now I have to extract the archive and add everything into a new arhcive in order to password protect the newly added files.

This is inconvenient because I am always adding more files that I need secured. Unfortunately, onedrive for business does not have the personal vault so I have to resort to using archives to secure these files. What is the solution to this problem?