In most of cases, if some specific change are required in the configuration, each version of the Minyaa Workflows plugin are able to come with an UpgradeTask class who will take in charge these modification.
The UpgradeTask is based on a JIRA extension point managed by the Universal Plugin Manager (UPM). On plugin deployment, if an UpgradeTask has never been executed, UPM will launch it.
The required changes are done in background ... In not yet identified cases, some of these upgrade may encounter some issues and causes that some of your Workflows are not correctly migrated with the new configuration related the new plugin version.
Such cases have been experimented by a part of our customer with a large number of Workflow.
In order to allow them to replay these Upgrades, a dedicated REST APIs has been implemented. It allows to re-launch some if them on some of your Workflows.