Convert to UEFI from legacy

[MUT]

I dont remember the details of how i installed qubes, but I think it ended up installing in legacy mode on my uefi system.

My esp/EFI/qubes contains only :
- fonts
- grub.cfg
- grubx64.efi
- xen-4.14.3.efi
- xen-4.14.5.efi
- xen.efi

I am missing the xen.cfg if i understand correctly, so when i try to load xen.efi (through refind or whatnot) i get the respective "Not found" error.

My /boot however contains: 
- config-...
- efi
- grub2
- initramfs-...
- loader
- symvers-...
- System.map-...
- vmlinuz-...
- xen-4.14.5.config
- xen-4.14.5.gz

From what i understand i need to generate the xen.cfg, and transfer some things from /boot/ to esp/EFI/qubes(initramfs, vmlinuz and maybe others). But i wanna know how to do it properly so that future updates update initramfs/vmlinuz, xen.cfg properly.

[MUT]

Bump?