Along with the parameters available in the Configuration Guide, there are a few that are not documented but can be kind of useful:
Recently I have found some quirks in the filtering feature.
For some reason, the following query returns invalid filter error to retrieve "accountStatus value is present but not equals XX":
So you have to specify the most simple form :):
After a few modification i got this to work with a very large eDirectory Tree.
Also, There are more hidden parameters :)
I used the skipDeltaImportDeletedEntry to do delta imports faster and process deletes from attributes we already use for terminates :)