HI Rudra,
Please have a look at the document Re-initialization of the Material Stocks/Movements cube (0IC_C03) with 2LIS_03_BF, 2LIS_03_BX and 2LIS_03_UM in BW 7.x and make sure to follow this procedure carefully.
The principle is to initialize inventory on date x. After that the marker should be updated. All historical goods movements (i.e. before date x) should not update the marker.
Best regards,
Sander