@hakancanada This feature as it’s described so far won’t help identify conversion attribution or customer journeys. I haven’t used Hubspot’s Sales features, but using the Marketing platform, you could create a custom behavioral event that fires after purchase, per purchase, that has properties for: product name or SKU, product value, and/or anything else you’re looking to track. Hubspot would automatically associate these events with right contact object.
If this conversion info is already being pulled into GA and you prefer the information there, then you just need to set up a connecting ID between GA and Hubspot to de-anonymize users and see their associated ecommerce data.