It depends on changes you've made.
If you change some texts only - then you can upload only runtime.xml file from corresponding module folder.
If you change or add some actions or behaviors to existing slides and objects - the same runtime.xml should be enough.
If you change or add some picture then you can upload runtime.xml + changed picture(s) - located in module images folder.
If you change some objects properties (for example, color of balloon) or add new object, then the simplest way is to upload all module folder or even all package, because it is not so easy to describe changed files for every object.
It depends on changes you've made.
If you change some texts only - then you can upload only runtime.xml file from corresponding module folder.
If you change or add some actions or behaviors to existing slides and objects - the same runtime.xml should be enough.
If you change or add some picture then you can upload runtime.xml + changed picture(s) - located in module images folder.
If you change some objects properties (for example, color of balloon) or add new object, then the simplest way is to upload all module folder or even all package, because it is not so easy to describe changed files for every object.