+1 on this issue. Not sure why the base price is being preferred over the unit price.
The commerce1_migrate_commerce_price plugin does not correctly migrate the unit price or total price. Instead it sets them to the base price of the product, so any order which has an overridden or custom price has a price of 0.
Needs work
2.0
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
+1 on this issue. Not sure why the base price is being preferred over the unit price.