My goal is to keep any data from 'each' Topology entry forward that is unique from the one prior, and if the element directly after the Topology entry is unique from the one prior, I need to retain an entry for Topology.

Does this mean that you're considering each Topology "block" pairwise, and that "uniqueness" only applies to the previous pair? If so, why are you discarding some (but not all) Topology entries? Or are you discarding every alternate Topology (by way of alternation)?

In reply to Re: Re: Re: Unique Array Data by dws
in thread Unique Array Data by The_Rev

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