I had the same thought and cleaned up some pipelines from 'v1' I made, which was writing to another set of schemas. No lunch. 

I looked around the table properties and found something odd in the lineage. When I click the links to the supposed dependencies, it doesn't jump to another table, so I think there is somehow a self-reference.  This was the first live table I set up last week, so I probably discovered some issues by abusing it. I'm giving the new schema in the pipeline a test now.