Update SLES 12 SP4 on a HA cluster - pacemaker removed ???

Hi,
i have a two node HA-cluster with SLES 12 SP3 which is running fine. I want to upgrade to SP4 following
https://www.suse.com/documentation/sles-12/book_sle_deployment/data/sec_update_migr_zypper_onlinemigr.html.

When doing “Zypper patch” it says, beneath other information:
The following package is going to be REMOVED:
pacemaker

???

I need pacemaker. Anyone got already in touch with that ?
What to do ?
Upgrade SLES 12 SP3 HA before, if possible ?
Or just upgrade and reinstall pacemaker afterwards ?

Thanks.

Bernd

Hi,
i did the update. Although saying it will remove pacemaker, it didn’t. So everything is fine, system is running without problems.

Bernd