Right now when a user is building a workflow and adds a new step, after they select an Adaptor the Version defaults to "latest", which means this workflow will ALWAYS use the latest version of the adaptor. This creates problems if there is a major adaptor version release and suddenly users' workflows get auto-upgraded to the "latest" version. We should default the Version to the most specific version... but then the step should be version-locked to avoid this scenario of a mistaken auto-upgrade to an incompatible version.