The default behavior for mapping variables between processes and tasks has changed. Previously, if a given task was not referenced in the
mappings section of the extension file
*-extensions.json), Activiti would apply the "Send all" strategy, meaning that all the process variables would be copied to the task level and all the task variables would be copied back to the process level. Starting from this milestone, by default, nothing will happen (no variable will be copied from the process to task and no variable will be copied from the task to the process). If you still want the "Send_ all_" strategy, you need to explicitly define it in the
mappings section, by setting the new attribute
MAP_ALL. Note that nothing will change if you're not using the "Send all" or the "Send none" strategies: regular mapping will keep working as before.