Migrating Lists
The easist way to transfer subscribers from one list to another is to export the first list, and then upload it to the second list.
1. Subscribers > Export Database
2. Select your date range. (Or Entire Database.)
3. Click 'Export'
Make sure that after you save your list somewhere on your computer, you modify the file to be ready to upload. Columns that have no information in them should be deleted to keep the size of the (.csv) file down.