Quick Reference Chart gone haywire

[gitts77]

Hello
I use your FreeOffice 2024.
The issue I have is with the Planmaker.
I was sometime last year doing a quick reference telephone chart with names and telephone numbers that I frequently use.

I would add names and telephone numbers from time to time, in other words, update it, and use the A-Z sort and filter - A-Z ascending.

I did that on one occasion, and while the names were in alphabetical order, the numbers went all over and not in the correct place, and this was after I saved it, so the numbers to the names were not in the correct position.
This has posed a nightmare, and to this day, I had to start all over again, little by little.

How could I prevent this from happening again.

Gitts