Comment (by Roland Haas):

@Yosef Zlochower confirmed (private email) that the branch rhaas/poisonarray seems to work.

Applied as git hash 9d0eaa4c "Carpet: handle marking grid-arrays invalid correctly" of carpet

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2534/evolution-of-grid-arrays-with-mol-no