Generated code not compiled upon updating yaml file and doing mvn compile

I am following the issue which is currently closed. https://github.com/swagger-api/swagger-codegen/issues/4707

Here as per the suggestion it's not oveeridding the impl and generated codes. But now if I am updating the yaml file and want to compile it then it's not compiled.

1. mvn clean install --- generating codes..
2. Updated yaml file
3. mvn compile --- skip overwrting to all the previous generated codes.

To make changes, do I need the fresh build by mvn clean compile every time? mvn compile is not working. Please suggest.