Hi,
Dis you find a solution for this issue ?
I have the same problem. We have a contact sharepoint list that exst from years and that was maintened by a user that had created categories to organize these contacts and since years we conenct this list in our Outlook (M365 version now). In Outlook we can see these categories that are noted "mising" from master category list) but these categories are not visible in SharePoint ? Also, we are trying to access thses categories via Microsoft Graph API and if we can get every contact we can't find these categories in the accessed fields ?
So we are looking for a solution since weeks now and we do not find any solution ? However, if Outlook can display these categories it meens that they are related to this sharepoint list and stored in the tenant somewhere ?
If someone can help us.
Thanks in advance.