Using PlantUML for UML is akin to using Visio for UML. It is a diagramming tool and can make great diagrams. However, it is not a modelling tool. It can't track

Using PlantUML for UML is akin to using Visio for UML. It is a diagramming tool and can make great diagrams. However, it is not a modelling tool. It can't track relationships between diagram elements and metadata about those elements, other than the metadata that can be extracted from the diagram. I've used PlantUML on past projects, but almost always in conjunction with a separate program that stored data in a SQLite db and then generated PlantUML on command. An example of something similar I am working on as a side project is using JQL to query all the issues in JIRA targeting a specific fix version, then generate the graphviz dot notation to create a hierarchical stoplight chart showing issue decomposition, issue id, issue status, and POC for an issue.