Quickbooks Online Sync: Allow line items to tie to more than one account

Presently, the entire invoice amount ties to a single QBO account.

Our invoices have credits (tied to a QBO clearing account) and fees (tied to a QBO revenue account). Fees and credits must be separate accounts for reconciliation purposes. I have to create these combo invoices in QBO and let them sync to Invoiced to take advantage of Invoiced's system.

However, when the credit amount exceeds the fee amount, I have to enter them as Credit Memos in QBO, and Credit Memos do not sync to Invoiced.com. So my customers are unable to get a full view of their account in the Invoiced customer portal. Nor am I able to include attachments.

Identifying the QBO account on a line-item basis would enable me to run all my invoices and net Credit Memos through Invoiced.