Best way to proceed with jail clone created via iocage


I recentely upgraded to TrueNAS 13 and have been upgrading my jails also. On my most important jail, I decided to work off of a clone using iocage clone functionality. I have upgraded the cloned jail successfully and the app running within the jail and I have tested everything.

Upon trying to use the iocage promote command to promote my test jail and then delete the source I get the message that the promote command does not exist.

My question is what is the best way to consolidate this jail and clone?