How to change the Loose material as Packed material for RG1 Register

Pls Suggest me to solve the problem. I want to know where the material form is maintained. P for packed, L for Loose. In RG1 register for Packed material everything is getting reflected in RG1 Register. Whereas for loose material opening balance, Total of opening and manufacture & Closing balance are not getting reflacted in Rg1 register.

I have checked till the date all production & issue are there in J_1IRG1 table after J1I5. After extracting the thru J2I5 only packed material is getting updated in J_2IRG1BAL table. But not the loose or unspecified material. However my clients need to get packed as well as loose material in RG1 register.

Manually in development client i changed the Losse or unspecified material as Packed by direct table entry in J_1IRG1 for testing. After doing the same when i extract the data thru J2I5, everything is coming in J_2IRG1BAL table. And getting reflected in RG1 register.

Now I have to change the Loose material as Packed material. So my problem will be solved. That is my objective.

Pls tell me how to do the change. Is any config setting or assignment?

Its urgent.

NB: helpfull answer will be awarded.

Regards

Srimanta