If you have already saved that Transcription Window, you can't just delete or cancel and empty record. What you have to do is ENTER DUPLICATE data into those fields, and then open the other record and do a "merge" If you don't get the merge arrow, go back to the transcription window and check that your duplicate is exactly like the other. Sometimes, there is an extra space before the family name (lazy thumbs!) or a period or a difference in one or more of the dates.
Reply back here if you need more help with doing a merge correction.