Something that happens on every slide may be on the slide Master. Or if, as Mary suggests, it is on a layer, the layer Master.
Much less likely, but still possible, in the normal state of an object.
Or, you could attach it here, and we all could look for it.
Here are Judy's best practices for uploading a .story file:
- Only include slides that are related to the problem.
- Be sure objects, layers, motion paths, and variables have meaningful names.
- If there is proprietary content, replace or delete it. For example, replace proprietary text with “lorem ipsum” text.
- Use a browser to come to this page, and click "Add Attachment at the bottom of your post to upload.