Packaging

Its the same issue except the compilation process is just getting farther along.

The root of your issue is that you remove or renamed the STRUCT without providing a Struct Redirector, which is usually in a plugin or projects .ini file.

You will have to either provide a redirector or manually open all of the blueprints who are marked with the issues, recompile them, find the error, and manually change the struct to the new one.
See here an example Using Redirects with C++ Structs?