+++ This bug was initially created as a clone of Bug #1973270 +++ We are about to add an option for now to seal a VM that is provisioned from a sealed template which would need to be documented in add/edit vm dialog.
Published: https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.4/html-single/administration_guide/index#New_Pool_General_Settings_Explained