TrnExportCSV Function Issue (Delayed Data exporting)

Hello all, 

I have an issue related to TrendExportCSV function, that is when i export data, the data delays an hour without any reason.

to be more clear, you can see these 3 photos.

as you see above the value is 496.06 in 11/04/2025 from 19:00 untill 20:00, then it is 497.1 in  11/04/2025 from 20:00 untill 20:30, but the exported data shows the value 496.06 to be at 11/04/2025 20:30 , and if i wait to the hour to end the same thing happens and it is delaying an hour.

i use a sample period of 1 minute for trend and trnexportcsv(period argument = 3600 (1 hour), length = 25 , mode = 1 , iDisplaymode = 14)

Note : when i configure the period to be 1800 the issue will happen if i export before the first 30 minutes of hour, and will not happen if i export after that half hour.

and if use a period of 60 the same issue will happen but with first and last 30 seconds of a minute and the data will delay an minute.