Dear Ajay Bhai,
I am little confused now 
Please clear my understanding. Your last comment means we do not have to use BTE for our scenario.
What we have to do is to settle the order on WIP after first phase of process order confirmation in order to post WIP in FI. Same practise we will do after confirmation of all phases until system posts Goods Receipt.
PLEASE CORRECT ME IF I AM WRONG?
Regards,
Zain Bashir