lxc centos 5

I migrated some CentOS openvz containers from Proxmox 3.4 to Proxmox 6 and they would not restore at all. I even tried this PATCH on /usr/share/perl5/PVE/LXC/Setup/CentOS.pm but it still gives me the same error and I am unable to restore my CentOS 5.11 containers... I keep getting this error...

Hi there, I'm provisioning a PVE 5.2 system to be deployed to a remote colocation facility. The system has to support some older, legacy software that only will run on CentOS 5 (32 or 64 bit). I have been able to install CentOS 6 successfully on this PVE version using templates, but I don't...