How to change "Book ID"

Scripture App Builder
1

I added the book of Genesis, but the book ID is wrong. I can’t find a way to change it to “GEN.” Where/how can one modify this?

Thank you,
Sarah Jane

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2

You could try deleting the book (right-click on it, Remove Book), making sure the source file has a line

\id GEN

at the top, then re-importing it.