Issue with VPCs Duplicating for JIT Vendors

I've been running into an issue upon importing products where the external inventory location for our 3PL is duplicating, causing the error "Multiple VPCs Match Vendor".  Every time this occurs, I haven't created the location for our 3PL, so I cannot figure out how to get to the bottom of the issue.  Normally to resolve the issue, I have to go into the sku and delete the duplicated external inventory location.

If anyone has an idea of why this would be occurring for only a handful of products in each import and not all skus in a product, I would appreciate feedback.  I have not received much support from the RO team.