If this issue is encountered, ZVM upgrade will appear to succeed, but VRA upgrades will fail to complete, and VRAs will be left in a non-operational state.
To workaround the issue, MorefID lookup feature must be disabled. Please contact Zerto Customer Support for assistance with disabling this feature.
The race condition itself is slated to be completely fixed in 5.0u4.
5.0, 5.0u1, 5.0u2