In Meridian it's not possible to release a drawing or assembly when referenced parts or sub-assemblies are "under change", but...
When you put a part or subassembly under change there is no check if drawings and assemblies related to it are in a "Under change" status. This way it's possible to change a released drawing or assembly by changing the referenced parts (without changing the status to "under change").
Maybe there are performance implications, but I think the same counts for very large assemblies.
Give us an option to prevent putting a part or assembly under change when related drawings or assemblies are in a released state.