Due to a merger/acquisition my organization has two Jira instances. There is an organization wide instance and a smaller instance. We all want to move towards using the org wide instance but still need to access the project data.
Problem: these two instances of Jira are at different versions and both have their own set of custom objects. (fields, workflows, screens, etc)
Migrating projects from one server to the other seems like it will be a serious bit of work. Federating the servers seems like a good way to keep the info from the old server available (for searches, dashboards, etc) without risk.
Am I looking at this the wrong way? What are the downsides to federating?