Can I use “Preserve customer IDs” option during X-Cart migration?

Due to certain platform restrictions, “Preserve customer IDs” additional option may not work out properly in some particular cases.

• For X-Cart 4.3.x and lower:

Though “Preserve customer IDs” additional option is available to choose from the list, customer IDs won’t be preserved during migration to or from X-Cart (version 4.3.x and lower). If X-Cart is Source Cart, customer emails will be set instead of customer IDs.

Why? There is no such thing as “customer ID field” in X-Cart of version 4.3.x and lower. This makes preservation impossible.

• For X-Cart 4.4.x and higher:

If customer IDs on Source Cart include any other symbols except numbers, the IDs won’t be preserved on X-Cart as well (4.4.x and higher). Otherwise, customer IDs preservation will be performed correctly.

For example, customer id “2337” will be preserved, but “user2337” - will not.