Metorik attributes conversions to the order that was actually placed, not the failed order that triggered the email. When a customer retries and succeeds, the new successful order is a separate order in your system.
While the automation metrics won't show direct conversion revenue, you can measure the flow's effectiveness by:
Comparing your failed order rate before and after implementing the flow
Tracking click-through rates on the retry links in your emails
Using the segmenting system to identify customers who received recovery emails and later placed orders