How can I merge a HUGE number of customers?
We're migrating from Lightspeed Onsite to Lightspeed Retail. We've had some of our data imported already, but this has caused a problem that I wasn't expecting.
We had two stores, so when our customers were imported, we ended up with over 11,000 duplicates. I know how to merge customers, but is there any way to do this in bulk? Am I really going to have to do a manual merge over 11,000 times?