Can we use dx API to move attachment from one work object to another? there is an attachment API as well as case / assignment api which supports Attachment json tag which has a required field called ID which is one time use for upload only. Thats why it is not resolving the problem.
I don’t think there is a DX API to copy the attachment. We could trigger the same service twice for two cases based on the context, so the attachments can be available on both cases.
/v2/cases/${caseID}/attachments