Should I import my title page, copyright page and table of contents?

Usually no — and the import preview suggests "Don't import" for them automatically. BookyAI generates its own title page (from your book's title, subtitle and author), its own copyright page (from the author, publisher, ISBN and legal notice in your settings) and its own table of contents with correct page numbers, in every export format. Importing your original ones would duplicate them. If your title page or TOC contains something personal you want to keep, point that section at Preface instead and edit it in the workspace afterwards.