I would like to kindly ask you to try my newest plugin (which is also my master’s thesis), that allows you to store your VP diagrams in text format PlantUML. The plugin allows you to import and export your diagrams from/to this format. Supported types of diagrams are Class, UseCase and Sequence (Interaction) so far.
You can check it on my Gitlab, download it and try it out. Link to repository is Lukáš Ondrák / DP - Text Format Diagrams · GitLab. How to run this project is written in project overview. Project is published as Open source.
I would love to see your comments and feedback to my plugin.
Thank you very much,