No, not that smrt 
I am a fellow Blynk user/learner and forum moderator.
Didn’t quite follow you there… but based on the History Graph Documents and my own usage, even though the History graph allows linking to Analog and Digital pins, I haven’t seen any actual data monitoring happen… only when I use virtual pins.
The .CSV clearly pulls it’s reports from the Server, which also usually indicates the need for virtual pin referencing.
And you didn’t post your sketch, so we are just guessing as to how you are even collecting this “data”
This is your project and server, so you are the best person to troubleshoot this issue, we can help, but instead of just waiting and asking, you need to keep testing for yourself and letting us know those results as well.
Have you created any other projects that use the History Graph? If so, same issue or different?
Have you tested your sketches with the Cloud Server (not just your own Local Server) to see if it works any better?