We migrated to Salesforce & JIRA Cloud Connector 1.1.0-AC. One of the biggest problems we have right now is that is doesn't allow sync if Salesforce.com field and JIRA field have different type. Our workflow is tied to the ability to sync between, say JIRA Component/s (Array) and a custom Salesforce.com text field. It used to work for us as we had value mappings defined.