To avoid including any unwanted resources, it is a good idea to use the "Update assets" option before exporting SCORM. It helps to improve and shorten the process of creating XML files, significantly reducing the package size.
To use this function, go to the Projects space and select the Update -> Update assets option. All the unwanted resources will be automatically removed from a lesson. mAuthor also makes it possible to update all assets in one go in all presentations within a project. To use the one-click "Update assets" option, simply go to the "Manage projects" section and select the "Update assets" link visible under a project to be updated. Then it is necessary to tick the checkboxes next to the relevant publications. All assets in the selected publications will be updated in one go.