Flow parameter disapper

Hey im working on an Flow which sends data from a SharePoint list to an Azure Automation Runbook. It worked fine the last week in a test. Now I wanted to edit it, but the Parameter disappeared. I can select them again as Parameter and save it without any error. But every time I open the Flow they're not saved.

This Problem is only in the Automation step. The Parameter before the Automation step are saved.

Really strange.