Hello @Gosforth Kubu,
By default uploaded KTRs/KJBs are hidden.
To change the default behaviour, stop the Server and open the following file:
- <Pentaho>\server\pentaho-server\pentaho-solutions\system\ImportHandlerMimeTypeDefinitions.xml
You then search for ktr or kjb to find something similar to:

You just need to change the "hidden" attribute to false and restart the Server.
Note that previously uploaded objects will keep the previous behaviour.
Regards,
Sérgio Ribeiro
Porto - Portugal