...
Abstract datastore tier limits per tenant apply to new deploys, reconfiguring VMs, and VMs that are captured from hypervisors to onboard them into the platform.
As part of the upgrade process, the platform will group tiers with the same name in abstract datastore tiers with the same name. For example, the platform will group all "Default tier" tiers, across all datacenters in an abstract datastore tier called "Default tier".