Are NFS handles stable across major updates?

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

When I take down an NFS server, update the base system (say, from -6 to -8), 
and bring it up again, will clients that have NFS handles open across the 
downtime/update access the same files (under the assumption that I mount 
everything to the same place after the update) under their handles?

In other words: is the NFS handle to VFS whatever stable across NetBSD 
versions?