Hi Gordon,
It’s hard to know precisely what’s gone wrong here without knowing what exactly you cleaned up (and how you did it).
My guess though is that the sales count you are seeing relates to a record of the sales made per product, maintained by WooCommerce.
This is stored as a piece of post meta data named “_total_sales” and you would need to remove/zero those out also.
Alternatively: if you’re seeking a completely clean start, why not setup some brand new ticket products and delete the old ones – might that work here?