One image is wrong. Why regenerate the whole slideshow?

Preserve the approved structure and edit the smallest unit that needs changing. The tool should know which slide is being revised and which properties are fixed: order, copy, layout or image. A whole-project regeneration can destroy useful decisions and consume unnecessary inference.

Show the revised slide in context before export. A replacement that works alone may break continuity with the surrounding slides. Track the revision as a version rather than silently swapping the asset underneath an approved sequence.