@glewandowski, I am referring to you because this topic is indirectly related to the new search API changes mentioned in RFC-61. As you know, changelog limitations exist in the new jql search APIs mentioned in the document below.
We need to bulk fetch changelogs, instead of calling GET changelog API per issue one by one. I am not sure that the POST /rest/api/3/changelog/bulkfetch endpoint is supported in our Atlassian instance. Since the API is still experimental maybe not all Atlassian instances or regions support this endpoint. If my assumption is correct, how can we reach this API for our instances?