migrate xpenology from older proxmox server to new proxmox server with disks and data?

hi folks, i had my xpenology on my proxmox server, an old optiplex with 32gb ram, but i just installed my new server with amd 5600, 2.5gb lan and 64gb ram but when i migrated my machines i also migrated the xpenology, but now it does'nt want to run and i get a warning that it does not find the data storage hdd; i have added the same hdd but sure have changed some sata port address or certificate or something like that....

i want to know how i can successfully migrate my xpenology with the data storage hdd without having to install the whole xpenology again?

lastly if it is necessary to reinstall the whole xpenology i would have 2 questions

1 what would be the best xpenology bootloader for now? and

2 how can I add the hdd without having to format it and without losing my data on it?