How can I bulk fulfill old imported orders on Shopify without notifying customers?

I have just transferred to Shopify and all my old orders were imported with Lit Extension. It seems a lot of them were imported as unfulfilled, how can i mark these as fulfilled in bulk without notify my customers, some of these are 2 years old. I don’t have Shopify Plus.

The other issue is quite a lot of the orders have come across as payment status VOIDED. I have no idea why but will this affect analytics ?

thank you