How do we tell if the data was never loaded into OSI PI for a date time range, i.e. 24 hours? For example when there is no data for a specific date I do not want the last value for previous date repeated for all 24 hours I need to be able to check something that says the data was never loaded.
I am not 100% sure but believe what you describe could be excmax behavior. Excmax is the period in seconds that when expired without any update forces the current value becoming pushed with a new timestamp again. In case this is what you observe, please check if affected tag(s) excmax point attribute is specified with 86400. You should be able to disable this behavior by setting excmax to 0.