There are two ways to approach this:
1. Just start from a copy of your original project. This may or may not be feasible given your projects.
2. If you export a component library from your original project (it's the little envelope button in the library panel), then import it into your new project, any interactions you had defined WITHIN your component definitions will be preserved. This doesn't help you for the top-level application, but it will help for your custom components.