[ovirt-users] How to upgrade CPU type in Clusters?

Hello, For reasons unknown during oVirt 4.2 -> 4.3 my CPU type was Broadwell IBRS and because of this I can’t upgrade the datacenter to 4.3. The problem was that on 4.3 theres only Broadwell IBRS SSBD and Broadwell. So the only way to up the cluster to 4.3 was to downgrade to plain Broadwell. Now I can’t upgrade it Broadwell IBRS SSBD. So, how can I upgrade it back? Thanks,