I think this all depends how and when the statements are generated because the address should probably relate to that time.
If they were generated as time goes by and stored somewhere then I’d expect the address to reflect whatever was appropriate at the time in question. If they’re generated on request (I.e. now) which is what I suspect happens then I’d expect them to reflect current address details.
Clearly, I suspect they are generated on request rather than made and stored at some point in the past.
As already stated, asking COps is all you can do. I’ll be interested to know what answer you get.