TrueNAS can't find my existing ssh key pairs

Weeks ago I manually (using the shell) generated a ssh key pair for root and another for truenas_admin. I’m logged into the TrueNAS gui as truenas_admin and I’m trying to set up replication from one TrueNAS system to another but the New SSH Connection wizard can’t see either of the key pairs. In the Private Key dropdown it offers only “Generate New.”
If I choose “Generate New” will it nuke my existing key pair?

I allowed the wizard to generate a new ssh key pair and it seems to have created the key pair somewhere OTHER THAN ~/truenas_admin
Unfortunately my first attempt to replicate a dataset has failed.

Replication “zoop/macbookpro - zima” failed: Unknown SSH+NETCAT transport error: ‘sudo: a terminal is required to read the password; either use the -S option to read from standard input or configure an askpass helper\n’..

If you are using the TrueNAS web interface for replication it uses the keys stored under credentials, not the ones from the command line. I am also not sure what your use case if for needing sudo is for your setup.