[rashkae]

Since most of my e-book conversions are e-book to e-book format, I disable the "insert page break" entirely by default. Since most properly formatted books will already have the page breaks, (or file splits) at the right places, automatically adding more can only be bad.

In your conversion options, under "Structure Detection". Change "Chapter Mark" to None, and change "Insert Page Breaks Before" to '/' (No quotes, just the slash.)

Edit: Since you've already changed the "inert Page Breaks', the only option that would be adding unwanted page breaks is the Chapter mark at automatic Chapter detection. Changing that to none should correct the problem.