Sorry if this is obvious, but I tried searching and couldn't find an exact answer. Does the identity source LDAP query support paging results? Or does a large AD query need to be broken down into smaller queries such as this old KB shows: 000034356 - How to write an LDAP query filter f... | RSA Link
"If there are 1000 or more users in AD, break down your single query into multiple smaller queries, with query filters similar to one of the examples below. Note that the following queries will retrieve users with names starting with H through M. Note that you must overlap the letters.