Hi Glenn,
I run Excel version 2019 (build 14430.20306) on windows 10 version 20H2.
The database is a listing of literary writers and the pseudonyms they write under. Columns A-C comprise of the author's real name, his/her nationality and dates, and a column which lists odd information like legal name changes. The individual pseudonyms are in column D onwards, mostly one per author but some writers use several names. Column D is usually stable and the problem lies with those columns from E onwards. But as I said, the problem is random rather than affecting all author records using more than one other byline. See example below where the Agee names should follow Jack Adrian in record 20071 and not be in the record above. I may have poor hand cordination because of a stroke, and make the odd error, but no way am I continually making them as I rigourously check before pressing Save.
I did start using Lotus, but eventually used Microsoft Works database (and created another database listing by pseudonym.). I transferred both databases via OpenOffice to Excel. The pseudonym listing transferred okay and I am using it to update the author listing as the pseudonym information in it did not transfer (I had used one field of maximum size to list the pseudonyms for each author). Over 55000 records to be added so I do not need to waste time correcting these errors.
Regards
John 
Hi m23to53,
From the way you've described this problem it sounds a lot like it's isolated to just this database only. Also, I get the distinct feeling that you'd like help in fixing this database which is basically an Excel file from what I see. You're not having this issue in any other Excel file are you?
If it is just this one database as you call it, I'm concerned about the part where you said, "I transferred both databases via OpenOffice to Excel." The thing is OpenOffice's Calc app uses a different file format than Excel so the transition or conversion of the file could also be the side effects you're seeing on the database now.
So when you move the databases to OpenOffice what was the file format or extension that was used? And when you transitioned to Excel did you just open those OpenOffice files in Excel?
Regards,
Glenn