Hi David,
Thank you for contacting us, and we are sorry for the late reply.
Since you mentioned HTTP Proxy and Entity transformers, I assume that you use
Execute entity transformers to call the entity transformers from the HTTP proxy.
As mentioned in the documentation, Execute entity transformers expects only one entity returned. Therefore, you cannot use “Get branches from a pattern” as it separates the entities based on the pattern you provide. You are correct that you can use “Node, transform nodes” inside the “Execute entity transformers” if you want to transform each object in an array without having to branch/split it.