Hi,
I don't think you can change the way Prioritize node behaves.
What we suggest to our customers, however, is to change the way they connect other nodes to the Prioritize.
Essentially, you create a Prioritize and note where it creates the output cell nodes. Then you manually create a matching Cell node for each of the Prioritize's output cell nodes, one-by-one with a very short connection. And then you only use "your" cells to connect with the rest of the diagram.
This makes it very easy to restore the connections after you changed the prioritization, you just go through and connect matching cells within each pair. And from what I remember (can't test now), the Prioritize's output cells position is not changing by itself, unless you were moving them in the first place.
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Dmitriy Alergant, Tier One Analytics