[bitfolk] Confused XEN says 64 bit, VPS says 32

I was too busy to upgrade one of my VPS to Buster the other week. Also the email from Andy reminded me that I have not converted that one to 64 bit. So I decided to kill 2 birds with one stone. First, into Xen shell and type in arch x86_64 That went nice and easy and Xen now tells me that I am operating in 64 bit mode and that the bootloader can only boot x86_64 guests Great. Prepare for upgrade to Buster, the press the go button. Chugging through the upgrade process I see that it is all 32 bit packages being installed. I thought Xen by some internal magic changed what I could download. Well Kernel wise really When all finished and a reboot done (a totally problem free upgrade by the way) I ran lscpu ~# lscpu Architecture: i686 CPU op-mode(s): 32-bit Byte Order: Little Endian OK I should have done some step earlier on in the process which I didn't - maybe install a 64 bit kernel and rebooted, or something. Showing my ignorance here I know, but I seem to remember when doing it on my other VPS it was as simple as do the arch command on xen then just update/upgrade What have I missed, please?