Standardizing Linked Dashboards

My team has recently been exploring the linking ability of Grafana and so far we have been very excited with all the potential. The ability to pass variable information between dashboards greatly expands the possibilities of Grafana. Now that we have constructed some mock-ups we were hoping to standardize these so we can roll them out in multiple client locations. These clients will all have the same underlying data, but the URL of where they host Grafana will obviously very. Is there anyway that individuals have been successful in modifying the JSON file to allow the dashboards to be uploaded in a different environment and maintain all of their link-ability?