HI Bruce,
Just noticed your posting..... have now made the correction .... it was a complicated and very involved process.... as had to be very careful in attaching/re-attaching spouses and children....
So lesson in all this.... be very careful when making a merge of like individuals, because if they are not the one and same, and one has completed the merge and exited the file, then deletion and re-entry appears to be the only way to fix the error. I did make a report file before making the deletions, which I printed out. This proved to be a great reference tool.
Hope this helps others.