Manual condition types are duplicating in VA02 after creating invoice in VF01

Hello,

I've an issue in pricing condition types. Manual Condition types are duplicating in VA02 transaction after creating invoice in VF01. But in VA03, it is displaying correct.

We have an enhancement for some manual condition types. I thought this duplication is because of enhancement and tried debugging but couldn't find any reason for this duplication.

Please help me out in solving this issue.

Thanks

Sreedhar