Once a presentation is copied (say from one product to another), you have no way to change what report slide in the presentation is pointing to.
While you can delete the report from the slide and add another report, doing so will loose all of the formatting choices you made for that report (e.g. width, height, shrink to fit, and other options for formatting how the report is shown within the slide).
You can now clone views within presentations. Right click on the embedded Aha! view and select Clone view. This will will create a copy of the report and add it to your slide. Use this option if you are creating multiple reports that are similar and would like to add them to your presentation quickly.