Using External Jar files in wdj

Hi Experts ,

I have an external jar file , pdfgen.jar , for which we have Development Component of type  external library  having public parts Assembly_PP and Compilation_PP .

Here in development phase we have some changes in pdfgen jar . say we have added new method as public void getdept() {.....} and build jar file again.

after changes im replacing the updated jar file in the lib folder of external library dc . But im not able to access the updated features of the jar, I have tried building the external library dc , and the dc in which im using this external library dc. but still im not able to access the updated feature

in that case if i create a new external library dc and add the updated jar , then on using this new external library im able to access the updated feautures

Regards

Govardan