AS02 change time dependent data

Hi Guys,

We want to change the cost center, location and plant for assets.. now we have prepared an LSMW for change the data. Now for eg    

Asset 1- date of interval 15/06/2016 cost center ,plant and locations is to be changed to 1

Asset 2 (diffrent Co.code) date of interval 15/06/2016 cost center ,plant and locations is to be changed to 1

Now when i am running the LSMW in foreground. System is updating the master data but when i go to AS02 and check the assets

Asset 1 is updated but when i go to asset 2 system deletes the old data and updates the new one..

Can anyone guide why system is deleting the line time?

PS: Experts please give ur valuable feedback. its quite URGENT.

Regards

Abhay