I am using hibernate 3.3.1 and I am facing some problems when I try to serialize hibernate proxies to json string using flexjson. My objects are using flexjson annotations in order to avoid serializing some attributes (@JSON include=false), however when proxies are created by javassist framework these annotations are being ignored. When proxies are created by cglib everything works perfectly. Has anybody faced this problem? Is this a bug or I need to do anything else?