"pulled_to_file" and "date_downloaded" mysteriously disappear

[csku]

Over the past several pulls (from database), previously pulled txns kept showing up in my temporary file (onetime.beancount). I found that after a transaction is pulled, the "pulled_to_file" and "date_downloaded" fields from the plaid2text object disappear. I have verified that both fields exist (with pulled_to_file correctly being false) before pulling. This is baffling and I would appreciate tips on how to nail down what's happening.