Good morning,
This is an old problem to import the package, e.g. Gnome describes it two years ago in here → Need support to combine PKCS#12 with CA file (#51) · Issues · GNOME / NetworkManager-openvpn · GitLab this bug has been closed so far but the issue comes up again → Issue importing PKCS#12 based connection (#83) · Issues · GNOME / NetworkManager-openvpn · GitLab .
It was nevertheless possible with older version of Network-Manager-openvpn to handle also pkcs#12 files so it seems that there has been a regression.
So i think this problem you encounter have nothing to do with the new algorithms which are introduced in here but with the internal handling of Network-Manager in specific with the CA. I think this problem should also occur with old packages which uses pbeWithSHA1And40BitRC2-CBC ?
@silvio what are your experience to handle your problem with this patch ?
Best,
Erik