For now, it has a workaround to force update a property value to any point in time, starting at some TW 8.X version R&D decided to not to allow to write on current property value an "old" datapoint
For now, it has a workaround to force update a property value to any point in time, starting at some TW 8.X version R&D decided to not to allow to write on current property value an "old" datapoint