Yes, your unfinished return will be accessible to finish. You'll need to make sure that the 8 returns are prepared in the same TurboTax Online account for the code to work as expected.

If you used our TurboTax Online - you will need to sign back into your Online Account using the same credentials you used to complete your return. Please follow this next TurboTax FAQ link to answer a few questions:   Why can't I find my return?    

You can also follow this TurboTax FAQ if needed: Where do I find a copy of my filed return in TurboTax Online?   

If you used TurboTax CD/Download, please follow this next link. I'm using TurboTax CD/download edition but can't find the file on my computer that contains my tax ... 

Thank you for using TurboTax.