Migrate doesn't work

What precisely does "doesn't work" mean? If you try running the import in drush with debug mode on (drush migrate-import --all -d) do you get anything interesting?

My thought is that your new nodes are not published. This is still the default, I think, and it's a good thing to have, so you understand that it's going to go live immediately if you choose to change the setting by explicitly telling the module to publish the newly imported nodes.

Have a look at your nodes in admin/content/node or admin/content/node/overview if you have the module installed for that feature, Views Bulk Operations, I think.

Go back into your content set in Migrate, and under published, set that field to 1 and run the import again. It should update the 100 previously imported nodes as published and then you'll probably see them in the site.