maybe Im a bit unclear

please read the following.

I would like to copy from 1 file to another.

Today the folder names is in 3 letters format
After migration they will be in format firstname.lastname

Source folder name is called "abl"
Target folder name is called "adam.bertil"

I have a text file with all usernames in format:
abl,adam.bertil

Theres is about 350 user folders

Is it possible to copy from source to target folder using this text file or is the format incorrect ?
If it is incorrect how should the format be ?

Im afraid I cant explain more specific.

regards
\erik