Thank you!

That helped answer some of my questions. Why would my 2nd filter above NOT include an OU that's one deeper? On this one..

OU=Global,DC=Corp,DC=One,DC=Co

It's pulling up all sub OUs but one in particular and that, oddly enough, is one I'm trying to get working. I don't have anything else on this particular LDAP server page with any other OU definitions. It, for one reason or another, doesn't pull in users of one of the sub OUs.

That got me thinking.. is it possible to use 2 OU filters for the RDN? I could create another OU definition on top of the 'global' one that would look for this one sub OU and nothing else. It's two OUs deep though and that's where I have a question.

is OU=NextOU,OU=FinalOU for the RDN acceptable? Where FinalOU is the actual OU that contains the members?