How to reproduce:

1. Open attached project
- Package has 3 different Release channels (Debug, Profile, Release) for a single plugin
- The import settings for the plugin folder in each channel are set to not execute on any platform
- They may be set to execute on a specific platform
2. Export the Wwise folder into a package
3. Open a new project
4. Import the package exported in step 2
- [OSX] Note how Unity throws errors that the plugin with that name already exists and that there can only be one plugin with that name
- Checking the import settings for each plugin folder reveals that they are set to execute on any platform, regardless of what they were set to execute on before