How to include book called INT (Introduction to Bible)?

I’m trying to include the book INT, between table of contents, and GEN to REV. How do I accomplish this? Putting INT as the first book, before GEN, does nothing.

Am I correct in assuming that you’ve added it to the list of books to be printed, like this?
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And if so, are you saying that nothing from INT shows up? That seems strange. Are you able to send a small archive file to the usual ( ptxprint _ support at sil.org ) address. No need to include all the GEN-REV books; just a few smaller ones and the INT book should be adequate.