You have performed shopping cart migration?
Some shopping carts allow to create the same e-mail addresses for different customers. It means that system does not block/stop the registration with the e-mail address that is already in use. As the consequence, users have the same e-mail addresses.
In such situation LitExtension will migrate only first customer and another will be skipped. That’s why quantity of customers on Source and Target stores may be different.
If you need more help, please do not hesitate to contact us!
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