We have 6.5.4.1 Servers running with Clients on 6.5.4. After upgrading the Clients to 7.0.2 some subfolders disappeaer. We I do an upgrade folder design all folders are shown, also in the design. If I switch back to the inbox the folders are not there. With a 6.5.4 client all folders are visible with the 7.0.2 client not. The servers are still 6.5.4.1.
When I rename the folders in the design they are also visible with the 7.0.2 client.
What to do ?