@steveklett, not that this is the most ideal solution here, but you could also use the /error endpoints to retry the errors. What I've done in the past is make a flow to get errors for the flow you want, then have an import step on the flow to retry based on the error message and/or error code. The flow could be scheduled for however often you want.
https://docs.celigo.com/hc/en-us/articles/7708779714715-Errors-API-endpoints#retry