Hello! Can anyone help me with this?

I am having an issue correcting a list of imported sales information. I imported a set of sales information from before using Zoho and all of the sales from my customers are listed as unearned / unused credits. Is there a way to mark all of these sales as earned or used? I believe I can create invoices for each sale and match them with their imported value, but this would add a lot of unnecessary time and be prone to errors. Is this possibly?

Thanks!