A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Instead of Copy-Paste, try Inserting slides through Reuse Slides option. In PowerPoint 2007. On theHome tab, click New Slide dropdown arrow, clickReuse Slides... item, click Open a PowerPoint File link, locate and select your presentation A and add all slides from it. Repeat this process for presentation B. See if it helps in maintaining the formatting.
- Chirag