Book file not saving changes

This issue continues to be an annoyance but I've never really seen it cause a problem. Regardless, I'm still searching to see if anyone has a solution.

I have been working for 6 months on two book files that comprise two volumes of the same title, where each document has its own ToC, in addition to an overall ToC for all the documents.. One volume has 5 documents and the other has 9. There is something with the ID book funtionality that causes the "apparent" modified outside book error. I've found that simply closing an open document (even right after saving it) will cause that document to be flagged with the error. However, if I open a different book document right before I close a document, then the closed document is not flagged.

Today I found a conversation on Stack Exchange where someone suggested using the Preflight Book feature from the book menu. I found this does resolve all the flaged files with no further intervention, which further indicates to me there is not really an issue with the flagged documents in most cases. I don't pay a lot of attention to the flags anymore unless I'm getting ready to package the book for print.

Whom ever answered this post seems to have opened more problems. Reading the stream here, the "Question" was never answered. The question was, "I'm got the "Document was not Saved in the Book" yellow triangle. The questioneer asked, "How do I fix that once I've gotten it." Instead of answering, the answerer gave a long speil on how they believed the anomaly began. So Here's how I fixed it, once the yellow triangle appeared. I went to the book pannel menue>entered preflight mode then went back to>the book pannel menue>update numbering>and updated the numbering for the book, this cleared all the yellow warnign boxes. Hope this helps. G. 

This thread is a bit old, but I am having the same problems while working on a book file (I work alone) with multiple sections. I need to open and resave the file several times, before the book changes it's status to updated (the yellow exclamation gone), but then after a while, when I open it again, I again see the exclamation marks on random files, and again the Book thinks that file were "modified outside"...

I also don't understand why this question was marked as "solved", since this issue was never actually solved yet...

The writer didn't say they were opening the same section by multiple people. She said she had multiple people working on different sections. Maybe you're meaning that the INDB can't be open by multiple people. OK I get that.

HOWEVER, the INDB function still doesnt' seem to work properly. I am opening INDD files from the book, WITH THE BOOK FULLY OPENED (i.e., not collapsed), I save the INDD file, then close the INDD file - with the book still FULLY OPEN. STILL, the Book gives me the yellow triangle warning that the document was saved outside the book. I HATE the book feature because of this. Creates such insecurity for the user.

I am also having this issue with a 208 page document (price book). Ive been saving and exporting the document as PDF's. When I make changes I save as normal then export. I am receiving the same edits to be made again and again as if I have never made them. But when I save there are no errors!