If you knew where your data was, it's possible to replicate it locally and then change the freenas job. but since it's not clear and it seems like there have been other issues. my suggestion would be to destroy the target datasets and start over.
But, if you want to keep trying, provide the full output of "zfs list" and "zfs mount" (in code tags). You can replace any sensitive names with placeholder text, so we know what to call it.
Yeah I really don't want to re-replicate 145TB of data x 3 servers :/
Here is output of zfs list/zfs mount etc,. looks like the file system is there I just can't see it?