If you peek at the CSV with a text editor like notepad, is there a new line in the value?
You might be able to work around the problem manually with find/replace after importing the data.
Find what: holds the new line sequence to be replace with T for KATIE.
Depending where the data came from the newline sequence may be CR, LF, or CRLF. Depending on your OS, typing a newline might not match. Worst case, regex might be needed:
Plus means one or more of the set of characters \n (newline) and \r (return).
Try a couple before you hit Replace All. Consider choosing Restrict To Selected Column.
Edit: @SharathPS I suspect I've misunderstood your question. Try double-clicking the cell in the JMP table before pasting. When you double click, you'll see a text edit box and the entire paste will go into that box. Otherwise, when the cell is single-click selected and not showing the edit box, newlines in the paste data will advance to the next cell.
Craige