Silverpop: Multiple submissions in same browser session create duplicates

Description

Submitting a form multiple times in the same browser session leads to 2 problems:

• A new contact is created for each submission. (Expected: the existing contact is updated with latest submission)

• * Auto-fill does not work. The first submitted data displays as auto-fill value always. This leads to the wrong display of Dynamic or Personalized Content in later submissions. (Expected: The latest submitting data should be displayed as auto-fill values on the form).

Builds affected:
EPiServer.ConnectForMarketingAutomation. 2.5.0
EPiServer.Marketing.Automation.Forms 1.1.5
EPiServer.MarketingAutomationIntegration.Silverpop 1.3.0