@gabboman @volpeon @makiki the TLDR here is that "you do not 'go to' a relay, a relay 'comes to' you". extremely common mistake
'moving a pds to a different relay' does not really mean anything as the PDS relay configuration simply means your pds politely tells that relay (through a public, unauthenticated endpoint anyone can point curl on your behalf to) it exists. the relay may or may not end up caring