Updating a zip file with AES

[Shloyem]

Hi,

In my project I create a big zip file with password and entries have AESKeySize 256.
After it is collected, I want to allow adding single small files.

From Wiki - updating a zip:
" Please note for AES: this will not work in the 0.86.0 release, if the existing zip has entries encrypted with AES. In that case you will need to repack into a new zip - see the Unpack and Repack sample at Zip Code Samples - creating and extracting"

Although, I was able to add a new file with the Wiki example and password, just that entry is added with AESKeySize 0.

1. Is there a way to add with a file with AESkeySize 256 without unpacking and repacking?
2. If I do with the workaround of later added files with AESKeySize 0, what's the meaning of it? some files in the zip are less protected?

My thanks and appreciation