I want to re import all my productrs again. without affecting the invoices i have already. or if i can bulk change all non inventory items to inventory

Hello seacavessouqdf,

Changing an item type from Non-inventory to Inventory will require you to open each item and change it. We're unable to do the change by re-uploading them or by doing this in batches.

If you have other questions in mind, feel free to go back to this thread.