Hi Bill,
TDV files contain information about the setup of the DIAdem VIEW module. That means: How is the workspace devided into different objects and which channels are displayed in the objects. Insisde a TDV file we don't store any datapoints, just references to the data. The idea is to configure the workspace in VIEW once and the use it with all kind of different files you load into the dataportal. And, by the way, the same ist true for DIAdem REPORT.
Now, LVM is a datafile which you can load and save in DIAdem NAVIGATOR only. And here is a point a don't understand in your description: That you are still able to see the channels in the VIEW environment can only mean that they are still loaded in the dataportal. But at the same time that would mean that the data is loaded from some data file. Please check the content of the data portal, and check the VIEW configuration. Which channels are configured to be shown in the diagram?
Let me know if you have further information.
regards
Ingo Schumacher
Systems Engineering Manager CEERNational Instruments Germany