I am researching how to synchronize two Jira instances, one of that in cloud. Sync direction would be unidirectional from server to cloud instance. My current level of information is that Jira has no builtin functionality to do that. So I am looking for add-ons. Probably it will only be possible to install an add-on on cloud instance. I checked some add-ons like Exalate and Backbone, but seems that they always need to be installed on both instances. Does anybody know an add-on which can do the sync with only installing on "client-side"? Are there alternative ways doing that by Jira itself?