Importing Radio ID's from a text file

I have a PSR-800 and somehow 590 Radio ID's got deleted while I was importing some TG's. I saw the Import from text file button under the new and delete button. I tried copying and pasting the ID's that I put in the wiki and pasting them into a Microsoft Word document, it didn't work. Has anyone ever tried this and if so how did you?

Importing Radio ID's from a text file