We are facing the issue, that we want to create single products out of variable products and therefor want to cope the variants as single products withput deleting the variable products and their SKUs.
Since we would have two products / variations with the same SKU at the same time the import wont work it seems since it states that the product already exists.
Is there any workaround? I already added the funcitonality in PHP for Woocommerce to handle that.
For the first question,
In that case, can you try with post IDs and check if you getting the same?
If the error persists, you may need to manually update them.
For the second question, our team has reached you via ticket. We hope to fix your problem soon.