Blue Iris and CodeProject.AI ALPR

Hi guys, I’m new to CPAI and I have followed a few bits from here so I have a separate virtual camera pulling the cropped plates from the ALPR module and putting them on screen / saving the snapshots in BI using motion detection to trigger a snapshot. The problem I am having is if two vehicles go past, both cropped plates pop up as images on the camera but BI only saves the second one.

Is motion detection not the right way to save the pics? Is there some way to save every time the alpr module sends a new one?