Hi Sun-Chan!
Thanks for reaching out to us and for following up to let us know that recreating the imports solved your issue.
I’m sorry it’s not ideal to re schedule all your imports. I can imagine this being a bit hard specially if you have many scheduled imports. But like you say, our last maintenance release includes several fixes and improvements for the Event Aggregator imports. You can learn more about it here > https://theeventscalendar.com/maintenance-release-week-21-august-2017/
As you marked this resolved I’ll go ahead and close it, but don’t hesitate to open a new thread if anything comes up and we’d be happy to assist.
Best,
Victor