Hi there! PM from the PG AI team, working on both pg_durable and the AI pipeline layer.

ai.backfill() ignores that row-level state entirely and reprocesses everything from scratch. https://learn.microsoft.com/en-us/azure/horizondb/ai/ai-pipe...

pg_durable answers "did this workflow instance finish, and if it crashed, where do I resume?", completed/running/pending/failed per node + checkpoint replay. https://github.com/microsoft/pg_durable/blob/main/USER_GUIDE...

If you want this problem addressed better, please add an issue to the open-source repo, we would love to dig in. https://github.com/microsoft/pg_durable/issues