issue found while loading LifecycleHistory data when using multiple windchill shell

Hi,

I am using a Custom loader to Load Lifecycle History information from windchill R8 to Windchill R10.  I am facing a problem. 

Could you please help me to resolve this issue.

Test Scenario:

I am Using 2 input files.

1. WTPart object Related LifecycleHistory Info

2. WTDocument object related LifecycleHistory  info

when i am running one by one in one windchill shell, it is loading fine.

But when i am loading in parallel (with 2 windchill shell console), the WTDocument related info is available in WTPart related information.

I could not understand what is happening and what i missed.

Thanks in advance

Thanks & Regards

Gnanamuthu Lucas