Field service: Completed debrief to charge line system generate item double line.

Any one can help me.

When I create debrief , System is generate item double line.

Please see step from below:

Create debrief in TAB: Material
1. Line 1 Input Item it not have data in pricing

2. Line 2 Input Item have data in pricing

3. Change status to completed
4.  See Tab: Charge > System Generate Item have data in pricing (Line 2)

5.  And then I have add item from line 1 into pricing

6.  Charge status to completed from debrief window again

7.  See Tab: Charge > System Generate Item from line 2  is double line

You can see picture from attached file

I do not want generate double line in Tab: charge window.