The missing resources are stored on the local storage(depends on the OS type).
Test on windows:
Image from the live update manual:
https://storage.googleapis.com/defold-doc/en/manuals/images/live-update/local-storage.png
In my current project, the exculded resources size are 9MB data(zip) with 1500+ files. This size will grow up soon and might reach 50+MB finally.
There will be lots of changes on so many files and there is no need to keep the old resources.
Will we have an API like resource.clean_unused(manifest, resource_clean_response) to remove these unuseful contents from the liveupdate.arcd according to the manifest?