Ghost-cli export use case

I’m trying to understand what the typical “export/import” use case is for. I have a server I’m running ghost in “production”. I want to decommission this server and move it to a different one, but I’m having all sorts of trouble. I don’t really want to get too specific because there’s just too much to list. import/export doesn’t seem to include images. members? The ghost-cli tool also wanted me to use import with an already-installed instance of ghost.

Is the intended purpose of import/export to do for example: I have two ghost instances A and B and I want A = A + B so I export B and import it into A. ?

Or is import/export meant to help move servers?

I’m happy to add more details in a follow-up but I’m so off-track I thought I’d try some broader questions first. Thanks.