Grafana 8 & MS SQL & Epoch Time

We setup a new windows box and installed the latest version of Grafana 8. Now we are migrating dashboards from a Linux box with Grafana version 6.4 and noticing that date time fields from MS SQL database are now returning as epoch time . On the Linux installation values were returned as standard date time values . Are we missing some configuration on the new system that is forcing this behavior ?
Thank you .