Changing the Upgradecode using the GUI either through the General grid or the Upgrade Item does not update the Upgrade table in the database, it changes a property in the Properties table called Upgradecode. Is this a known bug, or by design?
Right, the Upgrade Code setting in the General Information > General view should change only UpgradeCode in the Property table.
For the Upgrades view, it depends on the setting "Products sharing my Upgrade Code" vs. "Products having another Upgrade Code". If you choose the first one, the Upgrade table of your project stores special value "{00000000-0000-0000-0000-000000000000}", which is replaced with the value in the Property table in the built MSI database when you build the project. For the other setting, the Upgrade table should store whatever you enter.
