Can I ask what is a off the record case management call?
Normally a case management conference is a hearing held in court, where the parties tell the judge the status of the case and the judge makes any rulings that are necessary. A court reporter would be there as well, taking down everything that is said so that a transcript can be prepared later.
An off the record case management call is a case management conference, except it's held privately with the judge in a video meeting or phone call. Because it's off the record, there will be no transcript available since no court reporter will be present on the call.
Hope that was helpful, happy to answer any questions any time!