VRM shows hourly forecast in the first 15 min. + the quarterly forecast the next 3 quarters

The VRM for this system displays the forecast wrong. It seems visual only, the system uses the 15min. values for all quarters as far as i can tell.

This started a few weeks ago (when the forecast visualisation switched to 15 min. i think). Are there any settings i should check or is this a VRM server issue?