Nope, according to v3.50~13 GUIv2 MPPT History Incomplete - #4 by alexpescaru the devices are capable of delivering the data via VE.can. So it’s a design choice. Is it at least documented somewhere? If there was an error message in the console saying “no more data due to bus limitations, for older data look in vrm”, this thread wouldn’t have been startet. But as is, I had to suspect a bug.