Hello,
I tried to recreate the described scenario - the importing process seems to be working correctly for me.
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This article contains detailed information about the importing data - you might find it helpful: https://support.wix.com/en/article/how-to-import-collection-data-in-the-content-manager
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Could you please share more details?
- If I understand correctly, you are importing the “problematic” values into an existing column. Could you please share its properties? ( Column title → Manage Properties )
- Can you share the CSV file (or its part ) causing the issue?
- Also, what is your site URL?
Alexander