Hi @RogerLevy -- the import process should be fine, there aren't any major breaking changes.
In fact, if you really want, our upgrade scripts are supposed to be idempotent, so you can run them again (by deleting the schemaLog value from the database) so that ./nodebb upgrade runs them all again.
Alternatively, delete individual items from that sorted set.
Alternatively, run individual upgrades by executing ./nodebb upgrade upgrade_script_name
Ah, yes, that is potentially a stumbling block... port property is optional, if not specified, NodeBB will listen on port 4567. However the url property is the one that is referenced by NodeBB, and is used as the canonical reference to itself... so when somebody asks your forum what it is to be called, NodeBB will respond back with the value in url, so the port is required if you are accessing your forum with port number in url.