Grafana v10.2.3 is showing Alerting(Legacy)

Grafana version is installed using grafana helm chart version 7.0.19
I was trying to use alerting template after installing above version.
upgraded helm chart from 6.44.2 to 7.0.19
Grafana UI is showing Alerting (Legacy) instead of Alerting.

Expectation
image

Reality

Hi @usman.ahmad
Could you please help here ?

Hi @katriyabhavik

Were you using the Legacy alerting before updating Grafana to the newer version?

Yes @usman.ahmad
please suggest solution for the same

Ok, then in that case, please delete that old alert rule and then reccreate them.