Hello, good day. This is an issue with AppSheet because when you change the names, the configurations also change. However, I have been researching, and I have even written a book about it that is available on Apple Books, a standard guide for working with AppSheet.
But initially, your problem is that you input all configurations in the show If properties. Every time you regenerate, your configurations disappear, and the more columns you have, the more overwhelming it becomes, especially if you have to wait too long between saves, particularly if those configurations affect the app's performance. I suggest you try reading the book I wrote to improve productivity in your app. However, for now, I suggest you create a virtual column with the column property configuration, and then in the show If of each column, only put the name of the virtual column. When you regenerate, the virtual column won't disappear (perhaps only the content of the show If if you change its name), but it will be easier to input the configuration since you have it in the virtual column.
Then, with each show If, simply point to the virtual column you created earlier, and so on in a chain.
I recommend reading the standard again because it will benefit you greatly.
Spanish: https://books.apple.com/us/book/appsheet-protocolo-est%C3%A1ndar-de-nomenclatura/id6479531152
English: https://books.apple.com/us/book/appsheet-standard-nomenclature-protocol/id6480063548
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