You import you products, don't you ...
If you use NO Linked Products, you can go to the Tools ... Store Manager ... and run the following, in this order:
Reset ALL Products Master Categories ID
to be used for Linked Products and Pricing: Resetand all of the master_categories_id will be fix and the products_price_sorter ... both of which are ignored by most all Import Software programs ...Update ALL Products Price Sorter
to be able to sort by displayed prices: Update




