Mac to Windows Database issue
First, I would suggest using the Backup and Migrate module to move Drupal databases between hosts. That may solve your line breaks issues, and YMMV, but loading Drupal dbs via other MySQL methods can cause other issues.

Second, have you tried setting the $base_url config variable on your production server? You shouldn't have to change URLs in the SQL files. It's a best practice to use relative paths in content. There are modules/filters that will convert them to absolute paths on the fly.

Cheers!