Billing spreadsheet upload. Invoice with multiple lines?

We are on PS 9.2, tools 8.55.23.  We're attempting to use the billing spreadsheet upload but continue to get errors when trying to add invoice with multiple lines.  We are sure that it is because we don't know the correct sequence to place the lines in the spreadsheet.  For example; have tried the various inputs

Intfc_bi(header)

Intfc_bi_AEDS(acctg entry)

Intfc_bi_HDR(AR)

Intfc_bi(header)

Intfc_bi_AEDS(acctg entry)

Intfc_bi_HDR(AR)

where the intfc_bi and intfc_bi_hdr contained the same information, only the acctg entry lines contained different data.

I'm attaching an example of what our spreadsheet looks like.  Could someone help with the correct formatting for multiple lines.  Thanks