Can we use lazy umounts of autofs mounted filesystem to allow migration to a new NFS server?

Issue

• We are currently facing a challenge to migrate to a new storage solution. One of the issues we want to solve using lazy unmount.
• we have applications running on all hosts. These applications have a large range of run times: seconds to months.
• The current NetApp NFS server must be decommissioned for various reasons. We have a new NFS server, on which we will create a mirror of the entire original filesystem.
• Given the large range of job durations, it’s impossible to find a moment where this filesystem is not used.
• Therefore we would like to use lazy unmount (umount -l) to drain the usage of the old NFS server
• Can you confirm that this procedure works as intended?