[Samba] Updating from <= 4.1.11 Question

[James]

Hello,

     Per the wiki

"When the first DC with a newer version than 4.1.11 is started, these 
deleted objects are removed. Depending on the amount, this may result in 
a slow performance until all left objects of previous version are removed."

When I upgrade my first DC should I give it several hours to delete 
these entries and sync before updating the others? Any harm in updating 
the others if replication appears good even if the entries are not 
finished removing? Does this make sense?

-- 
-James