Major Description
When trying to migrate a process, displayed message contains misleading information:
"Warning this action cannot be undone. Migrating the diagram will prepare current file to be edited by the legacy jBPM designer. You will not be able to undo this action. Proceed with caution." (see misleading-message.png)
It is possible to migrate a process from legacy designer back to Stunner designer as well.
Expected behaviour:
The message will contain all necessary information about migration posibilities.
