woocommerce product csv attribute import question

I’m running into an issue importing product data in using the basic import function at the top of the product page.

I’m trying to import a google sheets csv the fields of which were created from labels in a product export.

After import, I see the attributes show up in my product data looking like this…

Which looks correct, but these are not the same as the existing attributes of the same name as you can see from this pulldown.

I am able to add and populate the existing attribute which looks like this alongside the imported attribute of the same name:

Is there a way to format the CSV to ensure that the attribute data comes in correctly using the existing attribute instead of creating an alternate of the same name?