Yes! There's a way to move your comments from your Blogger account to Disqus and it will take you no more than 5 minutes to set it all up.
Here's a step-by-step instruction on how to transfer your Blogger/Blospot comments to Disqus. Please make sure you're logged on to your Blogger. Okay, here it is:
How-To: Copying Blogger Comments To Disqus in 5 Steps
- Login to your Disqus account.
- Click "Admin" from the top right menu, then click "Discussions".
- Select "Import" from the submenu. Click "Blogger" then "Import comments from Blogger"
- Click Grant access to let Disqus access your Blogger Account. (You can revoke this app later)
- And you're all set! Imports may take up to 24 hours to complete, it depends on your comments count. Usually, a 1000 comments will take around a minute to finish importing. Just keep checking your Disqus account, it should notify you once your import is completed.