eRAB Drop Rate increased after Software Upgrade

To Ericsson Experts,
Recently we have upgraded our eNodeB Sw from 18.Q4 to 20.Q2.
Immediately after Sw Upgrade Erab Drop Rate has increased on majority of the sites on all the cells. Mostly due to UE lost.
Have anyone experienced such a behavior?

It is due to they added few new counters.
Switch path failure
There are some system constant by which you can mask those.