I believe I have answered my own question. : )
I created a pipeline which was triggered on the creation of a new Batch. The pipeline is set to capture the Batch ID, search for the appropriate Time Entry records, then copy Batch ID to Related Batch in Time Entries.
A second pipeline was created which is triggered when Related Batch field is updated. This pipeline is set to search for any Time Entries with "Excluded" = Yes and changes to No.
I will want to run many more tests, but I believe these 2 pipelines have achieved the needed results. YAY!
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Ember
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