We use a script to export the information and one to import the results. I run my code in the Script Console and then cut and paste the results into Notepad++ to test my import script. I discovered the issue as I arrowed across the returned results and the cursor failed to move at some points (until I hit the arrow a second time). I also tested it using Windows Notepad with the same results.
The copy/paste from Script Console output should not be used for import files.
WORKAROUND: Use fglcmd to run your groovy and capture the output.