I have a .7z archive that I manage using 7zFM (File Manager) and I can easily add objects to this archive. However the objects in the archive are encrypted with AES like I want them to be, but when I add something new I cannot seem to add encryption to that file within the archive unless I decrypt the entire archive, then recrypt it.
Is there an easy way to add encryption, or perhaps remove encryption, of specific files within a .7z archive?